The cycloaddition of N-sulfonyl and N-sulfamoyl azides with terminal alkynes generally produces amide derivatives via ketenimine intermediates. We herein delineate a Cu(I) catalyzed method using a prolinamide ligand that selectively generates N-sulfonyl and sulfamoyltriazoles in aqueous media by inhibiting the cleavage of the N1–N2 bond of 5-cuprated triazole intermediates. The present method is mild
N-磺酰基和N-氨磺酰基叠氮化物与末端炔烃的环加成通常通过烯酮亚胺中间体产生酰胺衍生物。我们在此描述了一种使用脯氨酰胺配体的Cu( I ) 催化方法,该方法通过抑制 5-铜三唑中间体的N 1 -N 2键的裂解,在水介质中选择性生成 N -磺酰基和氨磺酰三唑。本方法温和且耐空气、湿气和多种官能团,从而可以轻松获得各种三唑产品。