The final product (IV) in the sequence of reactions, CH_3CHOHCH_3 PBr_3 I Mg/Ether II ethylene oxide III H_2O IV, is

JEE Main Chemistry question

The final product (IV) in the sequence of reactions, CH_3CHOHCH_3 \xrightarrow{PBr_3} I \xrightarrow{Mg/Ether} II \xrightarrow{ethylene oxide} III \xrightarrow{H_2O} IV, is

(A)CH_3-CHOCH_2CH_2OH with branch
(B)CH_3-CHCH_2CH_2Br with branch
(C)CH_3-CH-CH_2CH_2OH with branchCorrect
(D) with branch

Answer: (C)

Solution

Isopropanol with gives isopropyl bromide (); Mg/ether gives isopropylmagnesium bromide, the Grignard reagent (); this adds to ethylene oxide (a 2-carbon ring-opening addition) to

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Question ID VK-148576