CH_3 - C-= CMg Br can be prepared by the reaction of – InterviewSolution

1.	CH_3 - C-= CMg Br can be prepared by the reaction of
Answer» `CH_3- C-= C- BR` with `MgBr_2` `CH_3- C -= CH` with `MgBr_2` `CH_3 - C -= CH` with KBr and Mg metal `CH_3 - C -= CH` with `CH_3 Mg Br`. SOLUTION :Acetylynic HYDROGEN is acidic and is REPLACEABLE .GRIGNARD reagent (RMgBr)is ionised as `overset(-)(R) overset(+)(M)gBr` (due to appreciated electronegativity difference of carbon and magnesium).

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