O, 9-(2-phenylethenyl)anthracene can exist as a pair of diastereomers as given below: H H. E-isomer Z-isomer a) Are the vinyl protons in the E isomer chemically equivalent? the b) Are the vinyl protons in the Z isomer chemically equivalent? c) What should be the splitting pattern for the vinyl protons in the: Z isomer ? E isomer ?

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: 9-(2-phenylethenyl)anthracene can exist as a pair of diastereomers as given below:
H.
H
H
Z-isomer
E-isomer
a) Are the vinyl protons in the E isomer chemically equivalent?
the
b) Are the vinyl protons in the Z isomer chemically equivalent?
c) What should be the splitting pattern for the vinyl protons in the :
Z isomer ?
E isomer ?
10. Account for the observation that only the ortho-isomer appeared in the distillate and not the para isomer.
Transcribed Image Text:: 9-(2-phenylethenyl)anthracene can exist as a pair of diastereomers as given below: H. H H Z-isomer E-isomer a) Are the vinyl protons in the E isomer chemically equivalent? the b) Are the vinyl protons in the Z isomer chemically equivalent? c) What should be the splitting pattern for the vinyl protons in the : Z isomer ? E isomer ? 10. Account for the observation that only the ortho-isomer appeared in the distillate and not the para isomer.
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