名称:
                                Improved synthesis of 2-amino-1,2,4-triazolo[1,5-a]pyrimidines
                             
                            
                                摘要:
                                An improved procedure is suggested for preparing 2-amino-1,2,4-triazolo[1,5-a]pyrimidines from 3,5-diamino-1,2,4-triazole and unsaturated aromatic ketones, with acetyl protection of the amino group in the step of oxidation of 2-amino-4,7-dihydro-1,2,4-triazolo[1,5-a]pyrimidines.