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Chapter 8: Alkenes: Reactions and Synthesis
part of OCHEM Test 3
274
Organic Chemistry
Undergraduate 2
07/01/2017

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Term
the 2 parts of preparation of an alkene
Definition
-dehydrohalogenation
-dehydration
Term
dehydrohalogenation
Definition
rxn of an alkyl halide with a strong base forms an alkene, with loss of HX
Term
dehydration
Definition
treatment of an alcohol with a strong base forms an alkene, with loss of H2O
Term
rxn of an alkyl halide with a strong base forms ______, with loss of ______
Definition
an alkene
HX
Term
rxn of ______ with a strong base forms an alkene, with loss of HX
Definition
an alkyl halide
Term
rxn of an alkyl halide with ______ forms an alkene, with loss of HX
Definition
a strong base
Term
treatment of ______ with a strong base forms an alkene, with loss of H2O
Definition
an alcohol
Term
treatment of an alcohol with ______ forms an alkene, with loss of H2O
Definition
a strong base
Term
treatment of an alcohol with a strong base forms ______, with loss of H2O
Definition
an alkene
Term
treatment of an alcohol with a strong base forms an alkene, with loss of ______
Definition
H2O
Term
some addition rxns of alkenes
Definition
-halogenation
-addition of hypohalous acids
-addition of water to alkenes
-addition of water to alkenes: hydroboration/oxidation
Term
halogenation
Definition
addition of halogens to alkenes
Term
______ react with alkenes to yield 1,2-dihaloalkenes
Definition
Br2 and Cl2
Term
Br2 and Cl2 react with ______ to yield 1,2-dihaloalkenes
Definition
alkenes
Term
Br2 and Cl2 react with alkenes to yield ______
Definition
1,2-dihaloalkenes
Term
the type of stereochemistry halogenation occurs with
Definition
anti stereochemistry; both halogens come from opposite sides of the molecule
Term
the rxn intermediate of alkene halogenation
Definition
a cyclic halonium intermediate that is formed in a single step by an interaction of an alkene with Br+ or Cl+
Term
how a cyclic halonium intermediate is formed
Definition
in a single step by an interaction of an alkene with Br+ or Cl+
Term
alkenes add ______, forming halohydrins, when they react with halogens in the presence of H2O
Definition
HO-X (X = Br or Cl)
Term
alkenes add HO-X (X = Br or Cl), forming ______, when they react with halogens in the presence of H2O
Definition
halohydrins
Term
alkenes add HO-X (X = Br or Cl), forming halohydrins, when they react with ______ in the presence of H2O
Definition
halogens
Term
alkenes add HO-X (X = Br or Cl), forming halohydrins, when they react with halogens in the presence of ______
Definition
H2O
Term
______ add HO-X (X = Br or Cl), forming halohydrins, when they react with halogens in the presence of H2O
Definition
alkenes
Term
how halohydrins are formed when hypohalous acids are added to alkenes
Definition
the added nucleophile (H2O) intercepts the halonium ion to yield a halohydrin
Term
how bromohydrins are formed when hypophalous acids are added to alkenes
Definition
bromohydrin formation is usually achieved by NBS in aqueous DMSO
Term
NBS
Definition
N-Bromosuccinimide
Term
DMSO
Definition
dimethyl sulfoxide
Term
reactivity of aromatic rings to halohydrin reagents
Definition
aromatic rings are inert to halohydrin reagents
Term
2 ways water can be added to alkenes
Definition
-hydration
-oxymercuration
Term
hydration
Definition
addition of water to a molecule, such as occurs when alkenes are treated with aqueous to give alcohols
Term
oxymercuration
Definition
a method for double bond hydration by reaction of an alkene with aqueous mercuric acetate followed by treatment with NaBH4
Term
______ adds to alkenes to yield alcohols in the presence of a strong acid catalyst
Definition
water
Term
water adds to ______ to yield alcohols in the presence of a strong acid catalyst
Definition
alkenes
Term
water adds to alkenes to yield ______ in the presence of a strong acid catalyst
Definition
alcohols
Term
water adds to alkenes to yield alcohols in the presence of ______
Definition
a strong acid catalyst
Term
although hydration of alkenes is important industrially,...
Definition
reaction conditions are too severe for most molecules
Term
the role of water when hypohalous acids are added to alkenes
Definition
nucleophile
Term
in ______, addition of Hg(OAc)2, followed by NaBH4, converts an alkene to an alcohol
Definition
oxymercuration
Term
in oxymercuration, addition of ______, followed by NaBH4, converts an alkene to an alcohol
Definition
Hg(OAc)2
Term
in oxymercuration, addition of Hg(OAc)2, followed by ______, converts an alkene to an alcohol
Definition
NaBH4
Term
in oxymercuration, addition of Hg(OAc)2, followed by NaBH4, converts ______ to an alcohol
Definition
an alkene
Term
in oxymercuration, addition of Hg(OAc)2, followed by NaBH4, converts an alkene to ______
Definition
an alcohol
Term
in ______, the mechanism of addition proceeds through a mercurinium ion
Definition
oxymercuration
Term
in oxymercuration, the mechanism of ______ proceeds through a mercurinium ion
Definition
addition
Term
in oxymercuration, the mechanism of addition proceeds through a ______
Definition
mercurinium ion
Term
hydroboration
Definition
addition of borane (BH3) or an alkylborane to an alkene. The resultant trialkylborane products can be oxidized to yield alcohols.
Term
oxidation
Definition
rxn that causes a decrease in electron ownership by C, either by bond formation between C or a more electronegative atom (usually O, N, or a halogen) or by bond breaking between C and a less electronegative atom (usually H)
Term
______ adds to an alkene to produce an organoborane
Definition
BH3
Term
BH3 adds to ______ to produce an organoborane
Definition
an alkene
Term
BH3 adds to an alkene to produce ______
Definition
an organoborane
Term
3 molecules of ______ add to BH3 to produce a trialkylborane
Definition
alkene
Term
3 molecules of alkene add to ______ to produce a trialkylborane
Definition
BH3
Term
3 molecules of alkene add to BH3 to produce ______
Definition
a trialkylborane
Term
treatment of ______ with H2O2 forms 3 molecules of an alcohol
Definition
the trialkylborane
Term
treatment of the trialkylborane with ______ forms 3 molecules of an alcohol
Definition
H2O2
Term
treatment of the trialkylborane with H2O2 forms ______
Definition
3 molecules of an alcohol
Term
the regiochemistry followed by oxymercuration
Definition
Markovnikov regiochemistry
Term
stereochemistry with which hydroboration of alkenes occurs
Definition
syn stereochemistry
Term
stereochemistry with which oxidation of alkenes occurs
Definition
syn stereochemistry
Term
regiochemistry with which hydroboration of alkenes occurs
Definition
non-Markovnikov
Term
regiochemistry with which oxidation of alkenes occurs
Definition
non-Markovnikov
Term
______ is complementary to oxymercuration/reduction
Definition
hydroboration
Term
hydroboration is ______ to oxymercuration/reduction
Definition
complementary
Term
hydroboration is complementary to ______
Definition
oxymercuration/reduction
Term
the mechanism of ______ involves a four-center, cyclic transition state
Definition
hydroboration
Term
the mechanism of hydroboration involves ______ transition state
Definition
a four-center, cyclic
Term
why hydroboration undergoes syn addition
Definition
because of the four-center, cyclic transition state
Term
why hydroboration undergoes non-Markovnikov regiochemistry
Definition
because of the attachment of B to the less sterically crowded C atom of the alkene
Term
how reduction occurs in organic chemistry
Definition
either by forming C-H bonds or by breaking C-O, C-N, or C-X bonds
Term
the bond forming that causes reduction in organic chemistry
Definition
forming C-H
Term
the bond breaking that causes reduction in organic chemistry
Definition
breaking C-O, C-N, or C-X bonds
Term
______ reduces alkenes to saturated hydrocarbons
Definition
catalytic hydrogenation
Term
catalytic hydrogenation ______ alkenes to saturated hydrocarbons
Definition
reduces
Term
catalytic hydrogenation reduces ______ to saturated hydrocarbons
Definition
alkenes
Term
catalytic hydrogenation reduces alkenes to ______
Definition
saturated hydrocarbons
Term
the catalysts most frequently used in hydrogenation of alkenes
Definition
Pt and Pd
Term
catalytic hydrogenation is a ______ process that takes place on the surface of the catalyst
Definition
heterogeneous
Term
catalytic hydrogenation is a heterogeneous process that takes place ______
Definition
on the surface of the catalyst
Term
the stereochemistry with which catalytic hydrogenation of alkenes occurs
Definition
syn stereochemistry
Term
______ is sensitive to the steric environment around the double bond
Definition
catalytic hydrogenation of alkenes
Term
catalytic hydrogenation of alkenes is sensitive to ______ around the double bond
Definition
the steric environment
Term
catalytic hydrogenation of alkenes is sensitive to the steric environment around ______
Definition
the double bond
Term
reactivity of alkenes vs. reactivity of other functional groups
Definition
alkenes are much more reactive than other functional groups
Term
in organic chemistry, oxidation decreases how ocidation occurs in organic chemistry
Definition
either by forming C-O, C-N, or C-X bonds or by breaking C-H bonds
Term
the bond forming that causes oxidation in organic chemistry
Definition
forming C-O, C-N, or C-X bonds
Term
the bond breakign that causes oxidation in organic chemistry
Definition
breaking C-H bonds
Term
epoxide
Definition
a 3-membered-ring functional group
Term
______ can be prepared by the reaction of an alkene with a peroxyacid RCO3H
Definition
epoxides
Term
epoxides can be prepared by...
Definition
-the reaction of an alkene with a peroxyacid RCO3H -when halohydrins are treated with base
Term
epoxides can be prepared by the reaction of ______ with a peroxyacid RCO3H
Definition
an alkene
Term
epoxides can be prepared by the reaction of an alkene with ______
Definition
a peroxyacid RCO3H
Term
how the reaction of an alkene with a peroxyacid RCO3H to form an epoxide occurs
Definition
occurs in 1 step with syn stereochemistry
Term
the stereochemistry with which the reaction of an alkene with a peroxyacid RCO3H to form an epoxide occurs
Definition
syn stereochemistry
Term
2 ways epoxides can be formed
Definition
-the reaction of an alkene with a peroxyacid RCO3H -when halohydrins are treated with base
Term
halohydrin
Definition
a 1,2-haloalcohol, such as that obtained on addition of HOBr to an alkene
Term
epoixides can be formed when ______ are treated with base
Definition
halohydrins
Term
epoixides can be formed when halohydrins are treated with ______
Definition
base
Term
______ of an epoxide ring with water yields a 1,2-diol (glycol)
Definition
acid-catalyzed rxn
Term
acid-catalyzed rxn of ______ with water yields a 1,2-diol (glycol)
Definition
an epoxide ring
Term
acid-catalyzed rxn of an epoxide ring with ______ yields a 1,2-diol (glycol)
Definition
water
Term
acid-catalyzed rxn of an epoxide ring with water yields a ______
Definition
1,2-diol (glycol)
Term
how ring-opening of an epoxide ring occurs in an acid-catalyzed reaction of an epoxide ring with water
Definition
by back-side attack of a nucleophile on the protenated epoxide ring
Term
______ is formed from an epoxycycloalkane
Definition
a trans-1,2-diol
Term
a trans-1,2-diol is formed from ______
Definition
an epoxycycloalkane
Term
hydoxylation
Definition
addition of 2 -OH groups to a 2bl bond
Term
______ causes the addition of 2 -OH groups to an alkene to form a diol
Definition
OsO4
Term
OsO4 causes ______ of 2 -OH groups to an alkene to form a diol
Definition
the addition
Term
OsO4 causes the addition of ______ to an alkene to form a diol
Definition
2 -OH groups
Term
OsO4 causes the addition of 2 -OH groups to ______ to form a diol
Definition
an alkene
Term
OsO4 causes the addition of 2 -OH groups to an alkene to form a ______
Definition
diol
Term
how hydroxylation of alkenes occurs
Definition
OsO4 causes the addition of 2 -OH groups to an alkene to form a diol
Term
hydroxylation of alkenes occurs thru...
Definition
a cyclic intermediate
Term
a safer version of the hydroxylation of alkenes uses...
Definition
a catalytic amount of OsO4 and the oxidant NMO
Term
the stereochemistry with which the hydroxylation of alkenes occurs
Definition
syn stereochemistry
Term
some ways alkenes can become reduced
Definition
catalytic hydrogenation
Term
some ways alkenes can become oxidized
Definition
-epoxidation
-hydroxylation
-cleavage to carbonyl compounds
Term
______ causes cleavage of an alkene to produce aldehyde and/or ketone fragments
Definition
O3 (ozone)
Term
O3 (ozone) causes ______ of an alkene to produce aldehyde and/or ketone fragments
Definition
cleavage
Term
O3 (ozone) causes cleavage of ______ to produce aldehyde and/or ketone fragments
Definition
an alkene
Term
O3 (ozone) causes cleavage of an alkene to produce ______
Definition
aldehyde and/or ketone fragments
Term
O3 (ozone) causing cleavage of an alkene to produce aldehyde and/or ketone fragments proceeds thru...
Definition
a cyclic molozonide, which rearranges to an ozonide that is reduced by Zn
Term
______ in neutral or acidic solution cleaves alkenes to yield ketones, carboxylic acids, or CO2
Definition
KMnO4
Term
KMnO4 in ______ cleaves alkenes to yield ketones, carboxylic acids, or CO2
Definition
neutral or acidic solution
Term
KMnO4 in neutral or acidic solution ______ alkenes to yield ketones, carboxylic acids, or CO2
Definition
cleaves
Term
KMnO4 in neutral or acidic solution cleaves ______ to yield ketones, carboxylic acids, or CO2
Definition
alkenes
Term
KMnO4 in neutral or acidic solution cleaves alkenes to yield ______
Definition
ketones, carboxylic acids, or CO2
Term
______ can be cleaved with HIO4 (periodic acid) to produce carbonyl compounds
Definition
diols
Term
diols can be ______ with HIO4 (periodic acid) to produce carbonyl compounds
Definition
cleaved
Term
diols can be cleaved with ______ to produce carbonyl compounds
Definition
HIO4 (periodic acid)
Term
diols can be cleaved with HIO4 (periodic acid) to produce ______
Definition
carbonyl compounds
Term
acid-catalyzed rxn of an epoxide ring with water yields a ______
Definition
1,2-diol (glycol)
Term
how ring-opening of an epoxide ring occurs in an acid-catalyzed reaction of an epoxide ring with water
Definition
by back-side attack of a nucleophile on the protenated epoxide ring
Term
______ is formed from an epoxycycloalkane
Definition
a trans-1,2-diol
Term
a trans-1,2-diol is formed from ______
Definition
an epoxycycloalkane
Term
hydoxylation
Definition
addition of 2 -OH groups to a 2bl bond
Term
______ causes the addition of 2 -OH groups to an alkene to form a diol
Definition
OsO4
Term
OsO4 causes ______ of 2 -OH groups to an alkene to form a diol
Definition
the addition
Term
OsO4 causes the addition of ______ to an alkene to form a diol
Definition
2 -OH groups
Term
OsO4 causes the addition of 2 -OH groups to ______ to form a diol
Definition
an alkene
Term
OsO4 causes the addition of 2 -OH groups to an alkene to form a ______
Definition
diol
Term
how hydroxylation of alkenes occurs
Definition
OsO4 causes the addition of 2 -OH groups to an alkene to form a diol
Term
hydroxylation of alkenes occurs thru...
Definition
a cyclic intermediate
Term
a safer version of the hydroxylation of alkenes uses...
Definition
a catalytic amount of OsO4 and the oxidant NMO
Term
the stereochemistry with which the hydroxylation of alkenes occurs
Definition
syn stereochemistry
Term
some ways alkenes can become reduced
Definition
catalytic hydrogenation
Term
some ways alkenes can become oxidized
Definition
-epoxidation
-hydroxylation
-cleavage to carbonyl compounds
Term
______ causes cleavage of an alkene to produce aldehyde and/or ketone fragments
Definition
O3 (ozone)
Term
O3 (ozone) causes ______ of an alkene to produce aldehyde and/or ketone fragments
Definition
cleavage
Term
O3 (ozone) causes cleavage of ______ to produce aldehyde and/or ketone fragments
Definition
an alkene
Term
O3 (ozone) causes cleavage of an alkene to produce ______
Definition
aldehyde and/or ketone fragments
Term
O3 (ozone) causing cleavage of an alkene to produce aldehyde and/or ketone fragments proceeds thru...
Definition
a cyclic molozonide, which rearranges to an ozonide that is reduced by Zn
Term
______ in neutral or acidic solution cleaves alkenes to yield ketones, carboxylic acids, or CO2
Definition
KMnO4
Term
KMnO4 in ______ cleaves alkenes to yield ketones, carboxylic acids, or CO2
Definition
neutral or acidic solution
Term
KMnO4 in neutral or acidic solution ______ alkenes to yield ketones, carboxylic acids, or CO2
Definition
cleaves
Term
KMnO4 in neutral or acidic solution cleaves ______ to yield ketones, carboxylic acids, or CO2
Definition
alkenes
Term
KMnO4 in neutral or acidic solution cleaves alkenes to yield ______
Definition
ketones, carboxylic acids, or CO2
Term
______ can be cleaved with HIO4 (periodic acid) to produce carbonyl compounds
Definition
diols
Term
diols can be ______ with HIO4 (periodic acid) to produce carbonyl compounds
Definition
cleaved
Term
diols can be cleaved with ______ to produce carbonyl compounds
Definition
HIO4 (periodic acid)
Term
diols can be cleaved with HIO4 (periodic acid) to produce ______
Definition
carbonyl compounds
Term
carbene
Definition
R2C:
Term
______ (R2C:) adds to an alkene to give a cyclopropane
Definition
a carbene
Term
a carbene (______) adds to an alkene to give a cyclopropane
Definition
R2C:
Term
a carbene (R2C:) ______ an alkene to give a cyclopropane
Definition
adds to
Term
a carbene (R2C:) adds to ______ to give a cyclopropane
Definition
an alkene
Term
a carbene (R2C:) adds to an alkene to give ______
Definition
a cyclopropane
Term
how the addition of carbenes to alkenes occurs
Definition
in a single step, without intermediates
Term
treatment of ______ with KOH forms dichlorocarbene
Definition
HCCl3
Term
treatment of HCCl3 with ______ forms dichlorocarbene
Definition
KOH
Term
treatment of HCCl3 with KOH forms ______
Definition
dichlorocarbene
Term
______ of dichlorocarbene to a double bond is stereospecific, and only cis-dichlorocyclopropanes are formed
Definition
addition
Term
addition of ______ to a double bond is stereospecific, and only cis-dichlorocyclopropanes are formed
Definition
dichlorocarbene
Term
addition of dichlorocarbene to ______ is stereospecific, and only cis-dichlorocyclopropanes are formed
Definition
a double bond
Term
addition of dichlorocarbene to a double bond is ______, and only cis-dichlorocyclopropanes are formed
Definition
stereospecific
Term
addition of dichlorocarbene to a double bond is stereospecific, and only ______ are formed
Definition
cis-dichlorocyclopropanes
Term
the Simmons-Smith reaction
Definition
reaction of CH2I2 and Zn-Cu to produce a non-halogenated cyclopropane via a carbenoid reagent
Term
______ (CH2I2, Zn-Cu) produces a non-halogenated cyclopropane via a carbenoid reagent
Definition
the Simmons-Smith reaction
Term
the Simmons-Smith reaction (______) produces a non-halogenated cyclopropane via a carbenoid reagent
Definition
CH2I2, Zn-Cu
Term
the Simmons-Smith reaction (CH2I2, Zn-Cu) produces ______ via a carbenoid reagent
Definition
a non-halogenated cyclopropane
Term
the Simmons-Smith reaction (CH2I2, Zn-Cu) produces a non-halogenated cyclopropane via ______
Definition
a carbenoid reagent
Term
the 3 steps in a chain-growth polymerization reaction
Definition
1: initiation
2: propagation
3: termination
Term
initiation of a chain-growth polymerization reaction
Definition
involves clevage of a weak bond to form a radical
Term
propagation of a chain-growth polymerization reaction
Definition
the alkyl radical adds to another alkene molecule to yield a second radical
Term
termination of a chain-growth polymerization reaction
Definition
when 2 radical fragments combine
Term
what the radical does in the initiation phase of chain-growth polymerization
Definition
adds to an alkene to generate an alkyl radical
Term
how many times does the propagation phase of the chain-growth polymerization reaction occur?
Definition
this step is repeated many, many times
Term
mechanisms of radical reactions are shown using...
Definition
fishhook arrows
Term
As in ______, the more stable radical (more substituted) is formed in preference to the less stable radical
Definition
electrophilic addition reactions
Term
As in electrophilic addition reactions, the ______ is formed in preference to the less stable radical
Definition
more stable radical (more substituted)
Term
As in electrophilic addition reactions, the more stable radical (more substituted) is formed in preference to ______
Definition
the less stable radical
Term
biochemical radical reactions are (more or less) controlled than laboratory radical reactions
Definition
more controlled
Term
when water is added to an achiral alkene,...
Definition
a racemic mixture of products is formed
Term
why an achiral alkene can react to produce a racemic mixture
Definition
-the achiral cationic intermediate can react from either side to produce a racemic mixture
-alternatively, the transition states for top side reaction and bottom side reaction are enantiomers and have the same energy
Term
______ reactions yield a single enantiomer, even when the substrate is achiral
Definition
enzyme-catalyzed
Term
enzyme-catalyzed reactions yield ______, even when the substrate is achiral
Definition
a single enantiomer
Term
enzyme-catalyzed reactions yield a single enantiomer, even when the substrate is ______
Definition
achiral
Term
when ______ adds to a chiral alkene, the intermediate carbocation is chiral
Definition
H+
Term
when H+ adds to ______, the intermediate carbocation is chiral
Definition
a chiral alkene
Term
when H+ adds to a chiral alkene, the intermediate ______ is chiral
Definition
carbocation
Term
when H+ adds to a chiral alkene, the intermediate carbocation is ______
Definition
chiral
Term
is the original chirality center affected by the addition of water to a chiral alkene?
Definition
no
Term
reaction of ______ with the carbocation doesn't occur with equal probability from either side, and the resulting product is an optically active mixture of diastereomeric alcohols
Definition
water
Term
reaction of water with ______ doesn't occur with equal probability from either side, and the resulting product is an optically active mixture of diastereomeric alcohols
Definition
the carbocation
Term
reaction of water with the carbocation (does or doesn't) occur with equal probability from either side, and the resulting product is an optically active mixture of diastereomeric alcohols
Definition
doesn't
Term
reaction of water with the carbocation doesn't occur with equal probability from either side, and the resulting product is ______
Definition
an optically active mixture of diastereomeric alcohols
Term
rxn of ______ with an achiral reactant leads to unequal amounts of diastereomeric products
Definition
a chiral reactant
Term
rxn of a chiral reactant with ______ leads to unequal amounts of diastereomeric products
Definition
an achiral reactant
Term
rxn of a chiral reactant with an achiral reactant leads to (equal or unequal) amounts of diastereomeric products
Definition
unequal
Term
rxn of a chiral reactant with an achiral reactant leads to unequal amounts of ______
Definition
diastereomeric products
Term
when regiochemistry in addition reactions is relevant
Definition
only when adding 2 different groups, such as H and Br, on an unsymmetrical alkene
Term
when regiochemistry in addition reactions is irrelevant
Definition
when 2 of the same group is added, such as 2 Br, or when adding groups on a symmetrical alkene
Term
Markovnikov addition
Definition
when a substituent is added to the more substituted C
Term
anti-Markovnikov addition
Definition
when a substituent is added to the less substituted C
Term
syn addition to alkenes
Definition
addition of 2 substituents from the same side of the plane
Term
anti addition to alkenes
Definition
addition of 2 substituents from opposite sides of the plane
Term
when regiochemistry in addition reactions is relevant
Definition
only when adding 2 different groups, such as H and Br, on an unsymmetrical alkene
Term
when regiochemistry in addition reactions is irrelevant
Definition
when 2 of the same group is added, such as 2 Br, or when adding groups on a symmetrical alkene
Term
Markovnikov addition
Definition
when a substituent is added to the more substituted C
Term
anti-Markovnikov addition
Definition
when a substituent is added to the less substituted C
Term
syn addition to alkenes
Definition
addition of 2 substituents from the same side of the plane
Term
anti addition to alkenes
Definition
addition of 2 substituents from opposite sides of the plane
Term
when a rxn step is endothermic
Definition
when it goes from more stable to less stable
Term
when a rxn step is exothermic
Definition
when it goes from less stable to more stable
Term
when a rxn has e'librium
Definition
when the starting and ending energies are roughly the same
Term
how to calculate Keq
Definition
Keq = ([product 1][product 2]...[product x])/([reactant 1][reactant 2]...[reactant x])
Term
why a certain component of a rxn, such as H+, could be on an e'librium arrow
Definition
because it's both a reactant and product
Term
how to calculate change in energy (ΔG)
Definition
ΔG = ΔH - TΔS

ΔG = change in energy
ΔH = change in enthalpy
T = temp in K
ΔS = change in entropy
Term
when ΔS is negative
Definition
if there's less entropy on products than on reactants
Term
relationship between temp and ΔG
Definition
increasing temp causes ΔG to become less negative, thus rxn less spontaneous
Term
elimination rxns generally form...
Definition
alkenes
Term
what heat favors in a rxn
Definition
elimination
Term
dehydrohalogenation
Definition
losing halogen at 1 site and losing H at another site
Term
polarizability basically means...
Definition
it can have induced dipole
Term
why the intermediate step of the rxn of an alkene with Cl2 contains a Cl atom with 2 bonds to that alkene
Definition
keeps us from disobeying octet rule
Term
how to calculate the rate of a rxn
Definition
rate = k[reactant 1][reactant 2]...[reactant x]
Term
why the Br in a rxn of an alkene with Br2 could prefer 1 partially positive C over another
Definition
because 1 C could be more stable than the other
Term
example of how deuterium is incorporated into the nomenclature of a molecule
Definition
2-deutero-1-methylcyclopentene
Term
why a cycloalkene acquires only 1 Br when there's water involved in the reaction
Definition
because water blocks the addition of another Br
Term
is breaking of ring strain endothermic or exothermic?
Definition
exothermic
Term
why Hg is a good Lewis acid
Definition
because it has d and f orbitals
Term
oxidation in OCHEM
Definition
gain or O or other eneg element or loss of H
Term
reduction in OCHEM
Definition
loss of O or another eneg element or gain or H
Term
some metals that are often used to catalyze rxns where alkenes gain H's
Definition
-Ni
-Pd
-Pt
Term
epoxide
Definition
[image]
Term
[image]
Definition
epoxide
Term
some types of strain in 3 membered rings
Definition
-angle strain
-torsional strain
Term
why H peroxide is good against bacteria
Definition
because it oxidizes some of the membranes in bacteria
Term
opening of epoxides yields (syn or anti) products
Definition
anti
Term
ozonolysis
Definition
breaking of molecule using ozone
Term
ozone as an oxidizer
Definition
potent oxidizer
Term
how ozone develops in the air
Definition
with electric discharge
Term
how ozone reacts with alkenes
Definition
breaks that double bond to yield 2 products that contain a 2bl bond with on O at the end
Term
ketone
Definition
[image]
Term
[image]
Definition
ketone
Term
aldehyde
Definition
[image]
Term
[image]
Definition
aldehyde
Term
the true utility of ozonolysis
Definition
in retrosynthesis
Term
in retrosynthesis, what happens to 2bl bonded O's that are neither ketones nor aldehydes?
Definition
they remain intact
Term
regiochemistry and stereochemistry of adding HX to alkenes
Definition
Markovnikov

syn addition
Term
regiochemistry and stereochemistry of adding X2 to alkenes
Definition
Markovnikov

anti addition
Term
regiochemistry and stereochemistry of halohydrin formation to alkenes
Definition
Markovnikov

anti
Term
halohydrin formation to alkenes
Definition
reacting alkenes with X2 and H2O
Term
regiochemistry and stereochemistry of oxymercurtation-demercuration to alkenes
Definition
Markovnikov

syn
Term
regiochemistry and stereochemistry of hydroboration-oxidation to alkenes
Definition
non-Markovnikov

syn
Term
regiochemistry and stereochemistry of catalytic hydrogenation to alkenes
Definition
no regiochemistry

syn addition
Term
regiochemistry and stereochemistry of epoxidation of alkenes with a peroxyacid
Definition
no regiochemistry

syn addition
Term
regiochemistry and stereochemistry of hydrocylation of alkenes with OsO4
Definition
no regiochemistry

syn addition
Term
regiochemistry and stereochemistry of addition of carbenes to alkenes to yield cyclopropanes
Definition
no regiochemistry

syn
Term
depiction of dichlorocarbene addition
Definition
[image]
Term
depiction of the Simmons-Smith rxn
Definition
[image]
Term
regiochemistry and stereochemistry of product of hydroxylation by acid-catalyzed epoxide hydrolysis
Definition
no regiochemistry

anti stereochemistry
Term
depiction of oxidative cleavage of alkenes by ozonolysis
Definition
[image]
Term
depiction of oxidative cleavage of alkenes by rxn of KMnO4 in acidic solution
Definition
[image]
Term
depiction of cleavage of 1,2-diols
Definition
[image]
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