Oxokohlenstoffe und verwandte Verbindungen. 20. Durch Arylmercaptane induzierte �berf�hrung von Semiquadrats�urehydraziden in Quadrats�ure-1,2-diamide
摘要:
In the presence of thiophenols semisquaric hydrazides (4) are converted into squaric-1,2-diamides (6) upon heating in alcoholic solution. Proof is given that thiosquaric-S-ester-amides (8) are intermediates in this process.