Novel mercaptoacetylative expeditious annulation of 5-mercaptopyrimidine ring on azoles using 1,3-oxathiolan-5-one
                                
                                    
                                        作者:Lal Dhar S. Yadav、Vijai K. Rai、Seema Yadav                                    
                                    
                                        DOI:10.1016/j.tet.2006.03.048
                                    
                                    
                                        日期:2006.6
                                    
                                    Schiff bases of azoles containing the amino group as part of a partial amidine structure undergo mercaptoacetylative expeditious annulation with 2-methyl-2-phenyl-1,3-oxathiolan-5-one to yield highly substituted 6,7-dihydro-6-mercapto-5H-thiazolo/1,3,4-oxa(thia)diazolo[3,2-a]pyrimidin-5-ones stereoselectively. The annulation is effected via an isolable intermediate under solvent-free microwave irradiation conditions in a one-pot procedure. (c) 2006 Elsevier Ltd. All rights reserved.