Visible-light-enabled stereoselective synthesis of functionalized cyclohexylamine derivatives via [4 + 2] cycloadditions

Photocatalyzed [4 + 2] cycloaddition of benzocyclobutylamines with α-substituted vinylketones afforded benzocyclohexylamines in moderate to good yields with excellent diastereoselectivities. An asymmetric version of this was preliminarily investigated.