Synthesis and photolysis of 4-thioxoazetidin-2-ones
Abstract
3,3-Diphenyl-4-thioxoazetidin-2-ones have been synthesized by photocyclisation of N-diphenylacetylthiocarbamates, and 3-phenyl-4-thioxoazetidinones have been prepared by thionation of azetidine-2,4-diones. Photolysis of the 3,3-diphenyl derivatives in methanol gave 2-methoxythiazolidin-4-ones viaα-cleavage, whereas the 3-phenyl derivatives were photochemically unreactive.