3. a,B-Unsaturated aldehydes and ketones can undergo reaction with nucleophiles at the B carbon, as shown below. :Nu-H Nu H a. Draw a resonance form for the unsaturated carbonyl that accounts for this reactivity. b. This reaction is called reaction. a 1,2-conjugate addition. an electrophilic addition. а. b. C. a direct addition d. a 1,2-addition.

Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Andrei Straumanis
Chapter24: Carboxylic Acids & Derivatives
Section: Chapter Questions
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3.
a,B-Unsaturated aldehydes and ketones can undergo reaction with nucleophiles at the B carbon, as
shown below.
||
+ :Nu-H
Nu
H
a. Draw a resonance form for the unsaturated carbonyl that accounts for this reactivity.
b. This reaction is called
reaction.
a 1,2-conjugate addition.
an electrophilic addition.
а.
b.
С.
a direct addition
d.
a 1,2-addition.
Transcribed Image Text:3. a,B-Unsaturated aldehydes and ketones can undergo reaction with nucleophiles at the B carbon, as shown below. || + :Nu-H Nu H a. Draw a resonance form for the unsaturated carbonyl that accounts for this reactivity. b. This reaction is called reaction. a 1,2-conjugate addition. an electrophilic addition. а. b. С. a direct addition d. a 1,2-addition.
6.
Show how each of the following transformations might be best accomplished. More than one step may be
required. Show all reagents and all intermediate structures.
CH3
CH3
CH;CH2-Č-Br
CH;CH2-C- NH2
CH3
CH3
a.
b.
N.
OH
H
only source of carbon
C.
OH
NH2
d.
CH3
CH3
CN
е.
C1
C1
Transcribed Image Text:6. Show how each of the following transformations might be best accomplished. More than one step may be required. Show all reagents and all intermediate structures. CH3 CH3 CH;CH2-Č-Br CH;CH2-C- NH2 CH3 CH3 a. b. N. OH H only source of carbon C. OH NH2 d. CH3 CH3 CN е. C1 C1
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