**Predicting Major Products in Alkyne Reactions with HX**In this exercise, we aim to predict the major products resulting from the addition of one equivalent of hydrogen halides (HX) to various alkynes. Here are the examples provided:(a) An alkyne featuring a phenyl group (Ph) and a terminal triple bond. The reaction with HBr is depicted, indicating the point of addition across the triple bond.(b) A linear alkyne with a terminal triple bond, subjected to reaction with HCl. The drawing shows how the rearrangement occurs after the addition of HCl across the triple bond.(c) A cyclic alkyne structure with a triple bond, reacting with HCl. This example depicts the transformation involving the addition of the halogen and hydrogen to the respective carbons involved in the original triple bond. For each reaction, typically, the halogen (X) adds to the more substituted carbon, following Markovnikov's rule, unless specific circumstances favor a different mechanism.

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Predict the major products resulting from the addition of one equivalent of HX to the following alkynes. (a) (b) (c) Ph H HBr HCI HCI

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter21: Benzene And The Concept Of Aromaticity

Section: Chapter Questions

Problem 21.44P

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