4-Acyl-2H-thiopyran-3,5(4H,6H)-diones: Synthesis, Oxidation, and Reaction with Amines
作者:T. A. Zheldakova、M. V. Budnikova、I. L. Rubinova、D. B. Rubinov
DOI:10.1023/b:rujo.0000019742.81245.f7
日期:2003.12
Acylation of 2H-thiopyran-3,5(4H,6H)-dione and 2-methyl-2H-thiopyran-3,5(4H,6H)-dione with acetyl chloride or propionyl chloride afforded the corresponding 4-acyl-2H-thiopyran-3,5(4H,6H)-diones. Oxidation of 4-acetyl-2H-thiopyran-3,5(4H,6H)-dione with m-chloroperoxybenzoic acid gave 4-acetyl-2H-thiopyran-3,5(4H,6H)-dione I-oxide. 4-Acyl-2H-thiopyran-3,5(4H,6H)-diones and 4-acetyl-2H-thiopyran3,5(4H,6H)-dione I-oxide reacted with pyrrolidine, allylamine, and p-anisidine, resulting in formation of the corresponding 4-aminomethylene derivatives.