9) The below reaction is an example of a in a Et H D CH3 CH3 Heat fashion. H CH3 Et CH3 D a. Electrocyclic ring shift; conrotatory b. Electrocyclic ring shift; disrotatory c. [1,5] sigmatropic rearrangement; suprafacial d. [1,5] sigmatropic rearrangement; antarafacial that proceeds b C oor oor of B. and D have electron density on methoxy

Organic Chemistry
9th Edition
ISBN:9781305080485
Author:John E. McMurry
Publisher:John E. McMurry
Chapter30: Orbitals And Organic Chemistry: Pericyclic Reactions
Section30.SE: Something Extra
Problem 14MP: Plastic photochromic sunglasses are based on the following reversible rearrangement of a dye inside...
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What is the resonanace for each molecule in second picture.

9) The below reaction is an example of a
in a
Et
H
D
CH3
CH3
Heat
fashion.
H
CH3
Et
CH3
D
a. Electrocyclic ring shift; conrotatory
b. Electrocyclic ring shift; disrotatory
c. [1,5] sigmatropic rearrangement; suprafacial
d. [1,5] sigmatropic rearrangement; antarafacial
that proceeds
Transcribed Image Text:9) The below reaction is an example of a in a Et H D CH3 CH3 Heat fashion. H CH3 Et CH3 D a. Electrocyclic ring shift; conrotatory b. Electrocyclic ring shift; disrotatory c. [1,5] sigmatropic rearrangement; suprafacial d. [1,5] sigmatropic rearrangement; antarafacial that proceeds
b
C
oor oor of
B. and D have electron density on
methoxy
Transcribed Image Text:b C oor oor of B. and D have electron density on methoxy
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