Halogen Bonding and π···π Stacking Control Reactivity in the Solid State

Abstract

The halogen bonding and the π···π stacking interactions induce the noncovalent self-assembly of modules into photoreactive supramolecular architecture. The π···π interaction pre-organizes the template, and the halogen bonding aligns the olefins to conform to the topochemical principle for photoreaction. The UV irradiation of the crystal resulted in a cyclization product with quantitative yield and stereospecificity.