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Organic Chemistry
mcat orgo
42
Chemistry
Undergraduate 4
06/30/2009

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Term
methane
Definition
one carbon
Term
ethane
Definition
2 carbons
Term
propane
Definition
3 carbons
Term
butane
Definition
4 carbons
Term
diols
Definition
molecules with two hydroxyl groups
Term
vicinal
Definition
diols with hydroxyl groups on adjacent carbons
Term
geminal
Definition
diols with hydroxyl groups on the same carbon
Term
epoxide
Definition
cyclic ethers with 3 members (also called oxiranes)
Term
strong bulky bases prefer ___ over ___ reactions
Definition
E2 over SN2
Term
CN is a strong
Definition
nuc
Term
long chains have ____ boiling points
Definition
high
Term
branced chains have ___ boiling points
Definition
low
Term
cis v trans BP?
Definition
cis is higher
Term
are meso compounds optically active?
Definition
NO
Term
conjugated system
Definition
two or more double or triple bonds separated by a single bond
Term
structural isomers
Definition
share only molecular formula--constituional isomers
Term
geometric isomers
Definition
differ in position of subsituents attached to a double bond (cis v trans)
Term
chiral
Definition
non superimposable mirror images
Term
entantiomer
Definition
chiral objects that are non superimposible mirror images
Term
diasteromers
Definition
steroisomers that are not mirror images
Term
number of possible stereoisomers
Definition
2^n n=number of chiral centers
Term
meso
Definition
have a mirror image that is superimposable--mirror plane of symmetry
Term
conformational isomers
Definition
differ only by rotation about one or more single bonds--same compound in a different position
Term
symmetrical has a ___ MP
Definition
high
Term
branching is ___ dense
Definition
less
Term
combustion
Definition
alkane oxygen to make carbon dioxide water and heat
Term
pyrolysis
Definition
molecule is broken down by heat-- cracking
Term
free radical halogenation
Definition
one or more hydrogen atoms are replaced by alogen atoms
Term
steps of free radical halogenation
Definition
1. initiation
2. propagation
3. termination
Term
protic solvent
Definition
capable of H bonding
Term
weak bases make
Definition
good leaving groups
Term
stronger nucleophiles are
Definition
stronger bases
Term
how many steps in a SN1 reaction?
Definition
two
Term
order of a sn1 reaction?
Definition
first
Term
how many steps in an sn2 reaction?
Definition
one
Term
need a strong nuc for ___ reaction
Definition
SN2
Term
sn2 is what order rxn?
Definition
second
Term
sn1 or sn2 gives inversion of stereochem?
Definition
sn2
Term
higher temps favor ___ over ___
Definition
E1 over SN1
Term
strong base favors ___ over ___
Definition
E2 over SN2
Term
criterion for aromaticity
Definition
4n + 2 pi electrons
Term
order of reactivity
Definition
acyl halides > anhydrides > esters >amides
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