Synthesis of 2-amino-4-aryl-7,7-dimethyl-5-oxo-4<i>H</i>-5,6,7,8-tetrahydrobenzo[<i>b</i>]pyran derivatives in ionic liquid medium
作者:Yuling Li、Baixiang Du、Xiangshan Wang、Daqing Shi、Shujiang Tu
DOI:10.1002/jhet.5570430323
日期:2006.5
In this paper, preparation of 2-Amino-4-aryl-7,7-dimethyl-5-oxo-4H-5,6,7,8-tetrahydrobenzo[b]pyran derivatives from aromatic aldehyde, malononitrile or cyanoacetate and 5,5-dimethyl-1,3-cyclohexanedione in ionic liquid [bmim+][BF4−] was described. Compared with other methods, this new method has the advantages of easier work-up, milder reaction conditions, high yields and environmentally benign procedure
本文从芳族醛,丙二腈或氰基乙酸酯和5制备2-氨基-4-芳基-7,7-二甲基-5-氧代-4 H -5,6,7,8-四氢苯并[ b ]吡喃衍生物,5-二甲基-1,3-环己二酮在离子液体[BMIM + ] [BF 4 - ]的说明。与其他方法相比,该新方法具有易于处理,反应条件温和,收率高和对环境有益的优点。