The arene–alkene photocycloaddition

Abstract

In the presence of an alkene, three different modes of photocycloaddition with benzene derivatives can occur; the [2 + 2] or ortho, the [3 + 2] or meta, and the [4 + 2] or para photocycloaddition. This short review aims to demonstrate the synthetic power of these photocycloadditions.

Keywords

• benzene derivatives
• cycloadditions
• Diels–Alder
• photochemistry