(9) The two compound shown are configurational isomers. They are not conformatio
ID: 700669 • Letter: #
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(9)
The two compound shown are configurational isomers. They are not conformational isomers because they both have the boat conformation, and converting one to other requires bond cleavage and formation of new covalent bonds. Hence they are configurational isomers.
(10)
In the benzyl anion, or the benzene carbanion, the lone pair is in the plane of the benzene ring, and hence it is orthogonal to the conjugated resonance system, and hence it cannot participate in the resonance here.
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