摘要:
评估了两种方法(MeOH/K2CO3、吡啶/Et3N)将硫引入 1,3-二取代季咪唑鎓盐 1-9 的 2-位(Cl、I、BF4、PF6、CH3OSO3 用作阴离子)得到九个 1,3-二取代咪唑啉-2-硫酮 10-18 (1, 10: R1 = CH3, R2 = CH3; 2, 11: R1 = OCH2Ph, R2 = CH3; 3, 12: R1 = OCH3, R2 = CH3;4, 13: R1 = OCH3, R2 = OCH3; 5, 14: R1 = NH2, R2 = CH2Ph; 6, 15: R1 = NCHPh, R2 = CH3; 7, 16: R1 = NH2, R2 = CH3 ; 8, 17: R1 = NCHPh, R2 = NCHPh; 9, 18: R1 = NH2, R2 = OCH3)。化合物11-18代表N-烷氧基和N-氨基咪唑啉-2-硫酮,而10