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NEU Organic Chem 2 Spring 2011 Stenberg Exam 1 Review
These flashcards cover all review material for the exam that can be put in flashcard format but I can't guarentee that I'll be able to get the reactions on here along with their mechanisms
23
Organic Chemistry
Undergraduate 2
02/08/2011

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Cards

Term
At what point would you expect to find the CH2 signal on an IR graph?
Definition

It's not a point but a range. CH2 signals are typically greater than 1400 but they normally don't go far from 1400 (maybe up to 1500 at most). Distinguishing between CH2 and CH3 can be very tricky

Term
At what point could you expect to find the signal for CH3 on an IR graph?
Definition

It's not a point but a range. CH3 will typically be less than 1400 but they won't go too far, maybe down to 1300 at the most. Distinguishing between these and CH2 signals can be tricky depending on relative shift of the machine that you use

Term
At what point could you expect to find the signal for an isopropyl group?
Definition

It wouldn't be a point, it would be a range instead. The signal would typically be given somewhere below 1400 but typically not below 1300. DON'T confuse this signal with CH3!

Term
At what point would the signal for N-H be found on an IR graph?
Definition

3400

Term
At what point would the signal for -C-H be found on an IR graph?
Definition

2900

Term
At what point would the signal for =C-H be found on an IR graph?
Definition

3100

Term
At what point would the signal for (triple bond)C-H be found on an IR graph?
Definition

3300

Term
At what point would the signal for O-H be found on an IR graph and what else is important to note?
Definition

The signal will typically be found around 3400 but the dip that this bond forms in the graph is extremely obvious; it is very broad (sometimes spanding as much as 700-800 in length) and typically doesn't have many sharp peaks

Term
At what point would the signal for C(triple bond)C be found on an IR graph?
Definition

2200

Term
At what point would the signal for C(triple bond)N be found on an IR graph?
Definition

2300

Term
At what point would the signal for C=C be found on an IR graph?
Definition

1600

Term
At what point would the signal for C(resonance single to double)C bond be found on an IR chart?
Definition

It would actually give off 2 points, about 1500 and 1600

Term
At what point would the signal for C=O be found on an IR graph?
Definition

1700 (this peak will be very distinct and sharp!)

Term
Where would you find the signal for C=O in C13 NMR?
Definition

It would be between 150 and 200

Term
Where would you typically find the signals for benzene and C=C in C13 NMR?
Definition

These signals would be between 100 and 150

Term
Where will the signal for C(triple bond)C show up on C13 NMR?
Definition

It will show up between 50 and 100

Term
Where would you expect to find the signal from an sp3 hybridized carbon in C13 NMR?
Definition

It will be found anywhere from 0 to 50

Term
In what range would you expect to find C=O then those same carbons bound to either a hydroxy group or a hydroxyl group on an HNMR graph?
Definition

9-12

Term
In what range would you expect to find hydrogens bonded to a benzyl group on an HNMR graph?
Definition

6.5-8

Term
In what range would you expect to find vinylic hydrogens on an HNMR graph?
Definition

4.5-6.5

Term
In what range would you expect to find halogenic hydrogens (hydrogens attached to the same carbon as a halide) in an HNMR graph?
Definition

2.5-4.5

Term
Where would you expect to find allylic hydrogens (hydrogens that are 2 carbons away from a double bond) on an HNMR graph?
Definition

1.5-2.5

Term
In what range would you expect to find saturated hydrogens in an HNMR graph?
Definition

0-1.5

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