Aldehydes Ketones Question 172

Question: When acetaldehyde reacts with $ PCl_5, $ the resulting compound is

[MP PMT 1992, 93]

Options:

A) Ethyl chloride

B) Ethylene chloride

C) Ethylidene chloride

D) Trichloro acetaldehyde

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Answer:

Correct Answer: C

Solution:

$ CH_3-CHO+PCl_5\to $

$ \underset{\begin{smallmatrix} EthylideneChloride \\ or \\ Gemdihalide \end{smallmatrix}}{\mathop{CH_3-CH<\begin{matrix} Cl \\ Cl \\ \end{matrix}+POCl_3}} $