Abstract
AbstractRegioselective cycloaddition of (dimethylvinylidene)carbene (1) into aryl alkenes in the presence of other olefins is reported. The reaction is presumably controlled by the phenyl group, which forms an aromatic π‐complex with the carbene C‐3 orbital, followed by the selective addition of 1 to the closest phenyl‐substituted double bond. Also, this selectivity is assumed to be attributed to delocalization of aromatic π electrons which increases the electron density of the conjugated carbon‐carbon double bond, thus leading to the facile addition of vinylidenecarbene.
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