Consider an extreme form of elimination where both the abstractable proton and the departing leaving group are removed from the exact same carbon atom, generating a reactive carbene intermediate. This

Question

Consider an extreme form of elimination where both the abstractable proton and the departing leaving group are removed from the exact same carbon atom, generating a reactive carbene intermediate. This pattern is technically referred to as a $1,n$ -elimination. What integer corresponds to the value of $n$?

Prashant Kotian · Accepted Answer

Correct answer: 1. In standard elimination terminology, numbers dictate the relative positions of the leaving atoms. -elimination removes atoms from adjacent carbons (1,2-elimination). When a base removes a proton and a leaving group departs from the very same original carbon atom (as in chloroform forming dichlorocarbene), the process is known as an -elimination or a 1,1-elimination. Therefore, the value of is 1.

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