Substitution (SN1) with hydride shift
Description: 1,2-hydride shifts can occur during substitution reactions if an unstable carbocation is formed next to a tertiary carbon.
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Hi! Thanks for this great website. The question is… in the ‘quiz yourself 1’, why does not occur the alkyl shift?
Hi! – generally speaking, H migrates preferentially to alkyl; mostly because it’s smaller, and it doesn’t have as many potential conformations that can create steric obstacles to migration.