A) \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}Cl\xrightarrow[{{H}_{2}}O]{Mg/ether}\]
B) \[C{{H}_{3}}COCl\xrightarrow[{{H}_{2}}O]{C{{H}_{3}}MgX}\]
C) \[C{{H}_{3}}CH\equiv C{{H}_{2}}\xrightarrow[C{{H}_{3}}COOH]{{{B}_{2}}{{H}_{6}}}\]
D) \[C{{H}_{3}}-\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{C}}\,-C{{H}_{3}}\xrightarrow{P/HI}\]
Correct Answer: B
Solution :
Ketones are obtained by the reaction between acid chlorides and Grignard reagent. \[\underset{Acetyl\text{ }chloride}{\mathop{C{{H}_{3}}-\overset{\begin{smallmatrix} O \\ | \end{smallmatrix}}{\mathop{C}}\,-Cl}}\,+C{{H}_{3}}MgX\xrightarrow[{{H}_{2}}O]{{}}\]
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