Photochemistry of heteroaromatics–a novel photocycloaddition of 2-alkoxy-3-cyanopyridines with methacrylonitrile
摘要:
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).