Mechanism of thiophene formation upon photolysis of enethiol esters

Abstract

11) The disappearance of the two N-methyl singlets in the NMR spectrum of the O-arylcarbamates and the appearance of an AAmethyl singlet for the S-arylcarbamates were observed to determine the progress of reaction. ( 12) W. H. Hunter and A. H. Kohlhase, J. Am. Chem. Soc., 54, 2425 (1932 We are indebted to Mira Smolarek for the mass spectra determinations.