Question
Explain why alkynes are less reactive than alkenes toward addition of Br2.
✓
Answer
The three-membered ring bromonium ion formed from the alkyne (A) has a full double bond causing it to be more strained and less stable than the one from the alkene (B),
Also, the carbon's of (A) that are part of the bromonium ion have more s-character than (B), further making (A) less stable than (B).
Also, the carbon's of (A) that are part of the bromonium ion have more s-character than (B), further making (A) less stable than (B).
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