Copper-Catalyzed One-Pot Synthesis of Unsymmetrical Arylurea Derivatives via Tandem Reaction of Diaryliodonium Salts with <i>N</i>-Arylcyanamide
作者:Pengfei Li、Guolin Cheng、Hong Zhang、Xianxiang Xu、Jingyuan Gao、Xiuling Cui
DOI:10.1021/jo501334u
日期:2014.9.5
efficient “one-pot” approach to multiple substituted ureas from N-arylcyanamide and diaryliodonium salts has been presented. The two-step procedure involved the weak base-promoted chemoselective arylation of secondary amines with diaryliodonium and Cu-catalyzed nucleophilic addition of N-arylcyanamide with second diaryliodonium. The diverse unsymmetrical arylureas were obtained in up to 91% yield for 29 examples
已经提出了一种有效的“一锅法”,用于从N-芳基氰酰胺和二芳基碘鎓盐中制备多种取代的尿素。该两步过程涉及仲胺与二芳基碘鎓的弱碱促进的化学选择性芳基化和第二仲芳基碘鎓的铜催化的N-芳基氰酰胺的亲核加成。对于29个实施例,以高达91%的收率获得了各种不对称的芳基脲。