One-Pot Synthesis of Phenylallyl Substituted Unsymmetrical Ureas Under Microwave Irradiation
作者:Lan-Qin Chai、Wei-Peng Chen、Xiao-Qiang Wang、Jian-Lin Ge
DOI:10.1080/10426500701407441
日期:2007.9.13
unsymmetrical ureas were synthesized in a one-pot procedure by reactions of cinnamoyl isocyanate, which was prepared from cinnamoyl azide by Curtius rearrangement, with various aromatic amines, 2-amino-5-aryl-1,3,4-thiadiazoles and 2-amino-5-aryloxymethylene-1,3,4-thiadiazoles under microwave irradiation. Compared to conventional methods, this synthesis has the advantages of mild reaction conditions
通过Curtius重排由肉桂酰叠氮化物制备的肉桂酰异氰酸酯与各种芳香胺,2-氨基-5-芳基-1,3,4反应在一锅法中合成了一系列苯基烯丙基取代的不对称脲-噻二唑和 2-氨基-5-芳氧基亚甲基-1,3,4-噻二唑在微波辐射下。与常规方法相比,该合成方法具有反应条件温和、易于操作、收率高等优点。产品已通过分析和光谱(IR 和 1H NMR)数据表征。