question_answer

                Carbylamines forms from aliphatic or aromatic primary amine via which of the following intermediates?     JEE Main Online Paper ( Held On 25  April 2013 )

A)                 Carbanion                          

B)                                        Carbine

C)                                        Carbonation                      

D)                                        Carbon radical

Correct Answer: B

Solution :

                \[RN{{H}_{2}}+CHC{{l}_{3}}+3KOH\xrightarrow[{}]{{}}\] \[RNC+3KCl+3{{H}_{2}}O\]Mechanism \[CHC{{l}_{3}}\xrightarrow[\alpha e\text{limination}]{O{{H}^{-}}/\Delta }\underset{\text{Dichlorocarbene}}{\mathop{\overset{\bullet \,\,\bullet }{\mathop{C}}\,C{{l}_{2}}}}\,\]