One-Pot Synthesis of 5-Alkylthio-3H-1,2-dithiole-3-thiones: Advantages and Scopes
作者:Mario L. Aimar、Rita H. de Rossi
DOI:10.1055/s-2000-8202
日期:——
The reaction of dialkyl malonate esters with P 2S5/S8 in boiling xylene in the presence of 2-mercaptobenzothiazole/ZnO as catalyst produces 5-alkylthio-3 H-1,2-dithiole-3-thiones as major identifiable product. Moderate yields were obtained with malonate esters of primary alcohols. The reaction fails with malonate esters of secondary alcohols. Regarding the substituent in position two, di- alkyl malonates