Solvent-free one-pot reactions for annulating a pyrimidine ring on thiazoles under microwave irradiation
作者:Lal Dhar S Yadav、Suman Dubey、Beerendra S Yadav
DOI:10.1016/s0040-4020(03)00854-8
日期:2003.7
One-pot reactions of glycine, acetic anhydride and thiazole Schiff bases (2a–f) diastereoselectively and expeditiously annulate a pyrimidine ring on the thiazole nucleus to yield 6,7-dihydro-5H-thiazolo[3,2-a]pyrimidin-5-ones (4a–f) under microwave irradiation and solvent-free conditions.
甘氨酸,乙酸酐和噻唑席夫碱(2a – f)的一锅反应非对映选择性,迅速使噻唑核上的嘧啶环脱环,得到6,7-dihydro-5 H -thiazolo [3,2- a ]嘧啶-在微波辐射和无溶剂条件下为5-1(4a – f)。