Cyclopropyl–C –cyclopropyl (A, C_8H_ 10 ) O _3/ H _2 O acid B. Separately, cyclopropylmagnesium bromide (C) [ H _3 O ^+] CO _2 acid B. Identify A, B and C.

JEE Main Chemistry question

Cyclopropyl–CC–cyclopropyl (, CH) acid . Separately, cyclopropylmagnesium bromide () acid . Identify , and .

(A)Cyclopropyl–CC–cyclopropyl, cyclopropanecarboxylic acid, cyclopropylmagnesium bromideCorrect
(B)Cyclopropyl–CC–cyclopropyl, butanoic acid, allylmagnesium bromide
(C)*n*-Propyl–CC–*n*-propyl, pentanoic acid, allylmagnesium bromide
(D)*n*-Butyl–CC–H, cyclopropanecarboxylic acid, allylmagnesium bromide

Answer: (A)

Solution

Oxidative cleavage of the symmetric internal alkyne dicyclopropylacetylene () gives two equivalents of the same acid, cyclopropanecarboxylic acid (), with the strained

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Question ID VK-142464