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JEE Main levelSingle correct optionDifficulty 2 of 3hx172

2-Bromopropane is converted into its Grignard reagent with $Mg$ in dry ether, and the reagent is then treated with $D X_{2} O$ . The main organic product is

A $CH X_{3} - CH X_{2} - CH X_{2} D$
B $CH X_{3} - CD X_{2} - CH X_{3}$
C $CH X_{3} - CHD - CH X_{3}$
D $(CH X_{3}) X_{2} CH - OD$

Answer: C

The reagent is

(CH X_{3}) X_{2} CH - MgBr

. The carbanion-like carbon takes a deuteron from

D X_{2} O

at the same carbon that carried Mg, giving propane-2-d,

CH X_{3} CHDCH X_{3}

, and

Mg (OD) Br

.

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