Question

Explain vinylic substitution​

Answer 1

Nucleophilic vinyl substitutions are closely linked to nucleophilic aromatic substitutions.

• The vinyl substitutions and nucleophilic aromatic substitutions both leave from an unsaturated carbon atom in the leaving community.
• The substitution stereochemistry depends on the substrate configuration and the particular route involved.
• However, nucleophilic replacement of a halogen atom directly attached to a double bond, as in the vinyl and phenyl halides, is not readily feasible