以1-苯基-3-甲基-5-吡唑啉酮为起始原料,经氯甲酰化、氧化、酯化、肼解、成盐及闭环反应制得4-氨基-5-(1-苯基-3-甲基-5-氯吡唑)-1,2,4-三唑-3-硫酮(6);6与苯甲醛经缩合反应制得4-苯甲亚胺基-5-(5-氯-3-甲基-1-苯基)吡唑-4H-1,2,4-三唑-3-硫酮(7);7与对硝基苄氯反应合成了2个新型含吡唑基1,2,4-三唑化合物,其结构经1H NMR,IR和元素分析表征。
4-Amino-5- ( 5-chloro-3-methyl-1 -phenyl-1H-pyrazol-4-yl ) -2H-1,2,4-triazole-3 (4H) -thio- ne (6) was afforded in six steps including ehloromethylation, oxidation, esterification, hydrazidation, salt formation and cyclization from 3-methyl-l-phenyl-lH-pyrazol-5 (4H)-one. 4-Benzylideneamino-5- ( 5-chloro-3-methyl-1 -phenyl-1H-pyrazol-4-yl) -2H-1,2,4-triazole-3 (4H) -thione ( 7 ) was then synthe- sized by condensation reaction of 6 with benzaldehyde. Two novel 1,2,4-triazolo derivatives contai- ning pyrazole unit were synthesized by reaction of 7 with 1- (chloromethyl) -4-nitrobenzene. The struc- tures were characterized by I H NMR, IR and elemental analysis.