Identify the major product of the following r | vedclass

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(C) The reaction of a terminal alkyne with excess $HBr$ follows Markovnikov's rule. In the first step,$HBr$ adds across the triple bond to form a viny

Vedclass · Accepted Answer

$1,1-$dibromo$-1-$cyclohexylethane

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(C) The reaction of a terminal alkyne with excess $HBr$ follows Markovnikov's rule. In the first step,$HBr$ adds across the triple bond to form a vinyl bromide intermediate: $Cyclohexyl-C\equiv CH + HBr \rightarrow Cyclohexyl-C(Br)=CH_2$. In the second step,another molecule of $HBr$ adds to the vinyl bromide,again following Markovnikov's rule,to form a geminal dibromide: $Cyclohexyl-C(Br)=CH_2 + HBr \rightarrow Cyclohexyl-C(Br)_2-CH_3$. Thus,the major product is $1,1-dibromo-1-cyclohexylethane$.

Identify the major product of the following reaction:

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