The 3-substituted 2-aminothiazolium bromides 1-3 undergo cyclocondensation with phosphorus trichloride in acetonitrile in the presence of triethylamine to give the 3-substituted 5,6-dihydrothiazolo[3,2-d] [1,4,2]diazaphospholes 4, thiazolo[3,2-d] [1,4,2] diazaphosphole 5 and its benzo derivatives 6. The products are characterized by 31P, 1H and 13C NMR spectra. Dimethyl sulfate alkylates 5 at N-7.
3-取代的
2-氨基噻唑铵溴化物1-3在醋腈中与
三氯化磷和
三乙胺反应发生环缩合,生成3-取代的5,6-二氢
噻唑[3,2-d][1,4,2]二氮杂
磷烯4、
噻唑[3,2-d][1,4,2]二氮杂
磷烯5及其苯基衍
生物6。这些产物通过31P、1H和13C核磁共振谱进行了表征。
二甲基硫酸酯在N-7位对5进行烷基化。