CHEM 232 - Exam 3 Questions and Answers 100% PASS

CHEM 232 - Exam 3 Questions
and Answers 100% PASS

Alcohol Activation does what? - CORRECT ANSWER-Transform alcohol into

good leaving group

Dehydration uses what? - CORRECT ANSWER-Heat

Dehydration mechanism - CORRECT ANSWER-E1 unless super super extreme

heat

If there is a pyridine or HX present do what? - CORRECT ANSWER-Acid - Base

PBr3/PCl3 what does it do? (generally) - CORRECT ANSWER-Substitute the

alcohol with a good leaving group

SOCl2 what does it do? (generally) - CORRECT ANSWER-Substitute the alcohol

with a good leaving group

Sulfonyl Chlorides what does it do? (generally) - CORRECT ANSWER-Substitute

the alcohol with a good leaving group

What two activation reagents use SnAc? - CORRECT ANSWER-SOCl2 and

sulfonyl chlorides

, Key things to have with SnAc mechanism - CORRECT ANSWER-Need Carbonyl

connected to a good leaving group and R group

What should I do if my Ephile does not have a good leaving group for a SnAc

mechanism? - CORRECT ANSWER-Activate it if it is an alcohol!!!! Then proceed

with SnAc.

When does carbocations occur? - CORRECT ANSWER-secondary and tertiary

alcohols as well as secondary and tertiary ethers when given the change

If there is pyridine... - CORRECT ANSWER-sweep up them extra mf proton

charges

Ether formation products - CORRECT ANSWER-Alkoxides + alkyl halides

(methyl or primary unhindered only)

Strong bases - CORRECT ANSWER-Charged CNO

Alkoxide + primary hindered or above - CORRECT ANSWER-No ether for you!

Only E2

SOCl2, pyridine, what are the mechanisms that take place? - CORRECT

ANSWER-Acid base, SN2, SnAc

Sulfonyl Chlorides, Pyridine, what are the mechanisms that take place? -

CORRECT ANSWER-Acid base, SnAc (No Inversion!!!!)




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