Chemistry · Aldehyde and Ketones: Nature of carbonyl group, nucleophilic addition to >C=O group, relative reactivities of aldehydes and ketones

Which of the following reaction(s) gives a gem-dichloride? This question has mul

Which of the following reaction(s) gives a gem-dichloride? This question has multiple correct options

  • A. \( C H_{3} C H O \) and \( P C l_{5} \)
  • B. \( C H_{3} C O C H_{3} \) and \( P C l_{5} \)
  • C. \( C H_{2}=C H_{2} \) and \( C l_{2} \)
  • D. \( C H_{2}=C H C l \) and \( H C l \)

Step-by-step solution

Reaction A gives gem-dichloride (CH3CHCl2). B gives (CH3)2CCl2, D gives CH3CHCl2, both also gem-dichlorides. C gives vicinal dichloride. Since multiple options are correct, A is the first listed.
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