question_answer

Treatment of cyclopentanone  with methyl lithium gives which of the following species? [NEET 2015 ]

A) Cyclopentanonyl anion

B) Cyclopentanonyl cation

C) Cyclopentanonyl radical

D) Cyclopentanonyl biradical

Correct Answer: A

Solution :

[a]

Here, \[C{{H}_{3}}Li\] abstract is an active proton from cyclo pentanone forming methane leaving behind an intermediate lithium cyclopentanoyl anion.