Synthesis and properties of unique mesoionic 1,3-thiazolium-4-olates
作者:B. Zaleska、D. Ciez、H. Falk
DOI:10.1007/bf00807792
日期:1996.12
N-bridged 1,3-thiazolium-4-olates were synthesized by reaction of 3-substituted 3-aminothioacrylanilides with bromoacetic acid ethyl ester in refluxing xylene. Their structural aspects were investigated by means of mass, NMR, and absorption spectroscopy. They display an unusual ring-chain tautomeric equilibrium, which is governed by the nature of the solvents and the pH value.