Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Andrei Straumanis
Chapter4: Polar Bonds, Polar Reactions
Section: Chapter Questions
Problem 30CTQ: According to the conventions above, what is the sign ( + or ) of the P.E. change (H) for Rxn 3?
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Question
Examine the following pericyclic reactions. For each reaction, tell whether it is an electrocyclic reaction, a cycloaddition reaction, or a sigmatropic rearrangement.
![CН,
OCH3
СНОCH,
+ ||
CH2
a.
CH2
CH3
CH3
CHз
Н.
b.
СНCH;
+ ||
d.
CH2
Н](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F91ca2709-b185-4e16-8c99-7a0736eeba3a%2Faad9d725-d9c1-411f-bcec-f8bf87c2f06e%2Fsk54r1n.jpeg&w=3840&q=75)
Transcribed Image Text:CН,
OCH3
СНОCH,
+ ||
CH2
a.
CH2
CH3
CH3
CHз
Н.
b.
СНCH;
+ ||
d.
CH2
Н
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