Synthesis, photophysical and photochemical properties of four [2.2]‘cinnamophane’ isomers; highly efficient stereospecific [2 + 2] photocycloaddition
Abstract
Anchoring two acryloyl substituents onto a paracyclophane skeleton generates four ‘cinnamophane’ isomers, one of which, the pseudo-gem, undergoes a ‘topochemical’ reaction in solution.