question_answer

Reactants of reaction \[I\]are \[C{{H}_{3}}CON{{H}_{2}},\,\,KOH,\,B{{r}_{2}}\]. Reactants of reaction II are \[C{{H}_{3}}N{{H}_{2}},\]\[C{{H}_{3}}C{{l}_{3}},\,\,KOH\].The intermediate species of reaction I and reaction II are respectively

A)  carbonium ion, carbene

B)  carbene, nitrene

C)  nitrene, carbine

D)  carbocation, nitrene

Correct Answer: C

Solution :

 Reaction I \[C{{H}_{3}}CON{{H}_{2}}\,\xrightarrow{B{{r}_{2}}}\,C{{H}_{3}}CONHBr\,\xrightarrow[-KBr]{KOH}\] Reaction II \[CHC{{l}_{3}}\xrightarrow{O{{H}^{-}}}\,CCl_{3}^{-}\,\xrightarrow{{{K}^{+}}}\] \[_{\centerdot }^{\centerdot }CC{{l}_{2}}\xrightarrow{C{{H}_{3}}{{H}_{2}}}\,C{{H}_{3}}NC\] Dichloro carbine