Photolysis of thieno-, furo-, and pyrrolo-[b]pyridine N-imides: formation of 3H-1,3-diazepines
Abstract
Photolysis of pyridine N-ethoxycarbonylimides condensed with thiophen, furan, and pyrrole rings on the b-side of the pyridine ring affords the corresponding novel 1H-1,2- and 3H-1,3-diazepines, respectively.