Which reagent can be used to convert a carboxylic acid chloride into a ketone?

• A

  Chromic acid
• B

  PCP
• C

  Diborane, hydrogen peroxide
• Correct answer
  D

  An organolithium compound

Solution

Carboxylic acid chloride were converted directly in good yields into ketones using excess alkyl lithiumcuprates ${\text{(R}}_{\text{2}}\text{CuLi)}$.

Hence, the correct answer is option: 'D'.