Exam 7: The Reactions of Alkynes - Introduction to Multistep Synthesis

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When HCl is added to an alkene,a secondary carbocation intermediate is formed, ^{When HCl is added to an alkyne,a vinylic cation is formed as an intermediate, Alkenes are more reactive than alkynes since the difference in stabilities between the carbocations is greater than the difference in stabilities between the alkene and alkyne.}