Photochemistry of heteroaromatics–a novel photocycloaddition of 2-alkoxy-3-cyanopyridines with methacrylonitrile
Abstract
The photochemical cycloaddition of 2-alkoxy-3-cyano-4,6-dimethylpyridine with methacrylonitrile gives a bicyclic azetine, 6-alkoxy-3,5-dicyano-2,5,8-trimethyl-7-azabicyclo-[4.2.0]octa-2,7-diene (45–55% yield) and 3-acetyl-4-amino-1,5-dicyano-2,5-dimethylcyclohexa-1,3-diene (15–17% yield).