what mechanistic intermediate is used to explain the preference for addition of the br atom , of hbr, to the internal carbon of

Question

Sveta_85 [38]

2 years ago

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what mechanistic intermediate is used to explain the preference for addition of the br atom , of hbr, to the internal carbon of

a terminal alkyne

Chemistry

1 answer:

ra1l [238] · Answer 1 · 2023-12-25T13:05:09+03:00

The mechanistic intermediate that is used to explain the preference for addition of the Br atom , of Hbr, to the internal carbon of a terminal alkyne is free-radical conditions.

The addition of HBr to an alkyne under free-radical conditions is governed by the addition of a Br atom to the alkyne which helps in giving the most stable alkyl radical possible. The addition of HBr in the absence of radicals is governed by the addition of a proton to the double bond which helps in giving the most stable carbocation possible.

A molecule wherein a carbon atom has a fine fee and three bonds is known as a carbocation. We can basically say that they are carbon cations. Later, it forms into carbonium ion. Any even-electron cation that possesses a big effective charge at the carbon atom is known as an carbocation.

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