Competing pathways in the photolytic cycloaddition reactions of N-ethoxycarbonylazepine to [60]fullerene: formation of [2 + 4] and [2 + 6] photoadducts
Abstract
The photochemical reaction between [60]fullerene and N-ethoxycarbonylazepine, formed in situ by light-induced decomposition of ethyl azidoformate in benzene, produces two photoadducts in the ratio of 4:1 by formal [2 + 4] and[2 + 6] cycloaddition reactions as established by a series of high-field (600 MHz) NMR experiments.