A) Dichloro carbene
B) Trichloro carbene
C) Chlorine atoms
D) Chlorine molecules
Correct Answer: A
Solution :
This is Reimer-Tiemann reaction where the electrophile is dichlorocarbene \[(:CC{{l}_{2}})\] generated from chloroform by the action of a base. \[O{{H}^{-}}+CHC{{l}_{3}}\]⇌ \[HOH+:CCl_{2}^{-}\to C{{l}^{-}}+:CC{{l}_{2}}\]
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