, -dihalocyclopropane precursor Cl-CH_2-CH_2-CH_2-Cl + Mg A

JEE Main Chemistry question

α,ω-dihalocyclopropane precursor Cl----Cl + Mg → A

(A)Cyclopropane (three-membered ring)Correct
(B)Cl-Mg-CH_2CH_2CH_2-Mg-Cl
(C)Both (A) and (B)
(D)None of the above

Answer: (A)

Solution

An -dihalide (here, 1,3-dichloropropane) reacting with magnesium (or zinc, or sodium) undergoes intramolecular coupling: the metal inserts at both carbon–halogen bonds and the two ends join to close a

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Question ID VK-148132