CH_3I + NH_3 CH_3NH_2 CH_3I (CH_3)_2NH CH_3I (CH_3)_3N CH_3I (CH_3)_4N^ + I^ - . This sequence illustrates

JEE Main Chemistry question

CH_3I + NH_3 \rightarrow CH_3NH_2 \xrightarrow{CH_3I} (CH_3)_2NH \xrightarrow{CH_3I} (CH_3)_3N \xrightarrow{CH_3I} (CH_3)_4N^{+}I^{-}. This sequence illustrates

(A)Exhaustive methylation of ammonia, proceeding all the way to a quaternary ammonium saltCorrect
(B)A reaction that stops cleanly after mono-methylation
(C)The Hofmann elimination
(D)The Gabriel synthesis

Answer: (A)

Solution

Successive treatment with methyl iodide methylates ammonia's nitrogen one step at a time — $ → → → →

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Question ID VK-150564