Synthesis of Benzofuryl Substituted Unsymmetrical Ureas Under Microwave Irradiation
作者:Lan-Qin Chai、Yony-Xi Chen、Wei-Peng Chen、Qi Ding
DOI:10.1080/10426500802176689
日期:2009.2.3
2-benzofuryl substituted unsymmetrical ureas were synthesized by reactions of benzofuroyl isocyanate, which was prepared from benzofuroyl azide by Curtius rearrangement, with various aromatic amines, 2-amino-5-(benzo-2-furyl)-1,3,4-thiadiazole, and 2-amino-5-aryloxymethylene-1,3, 4-thiadiazoles under microwave irradiation. Compared to conventional methods, this synthesis has the advantages of mild reaction
由苯并呋喃酰叠氮化物经库尔提斯重排制备的苯并呋喃酰异氰酸酯与各种芳香胺、2-氨基-5-(苯并-2-呋喃基)-1,3反应合成了一系列2-苯并呋喃基取代的不对称脲, 4-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 1 H NMR)数据表征。