Three-component synthesis of 2-amino-3-cyano-5-oxo-4-perfluoroalkyl-5,6,7,8-tetrahydro-4H-chromene derivatives
作者:Linglin Bian、Jiechao Xu、Liqing Xie、Jie Chen、Hongmei Deng、Min Shao、Tianling Ding、Hui Zhang、Weiguo Cao
DOI:10.1016/j.tet.2013.05.053
日期:2013.7
8-tetrahydro-4H-chromene derivatives were achieved via a one-pot, three-component reaction from easily available methyl 2-perfluoroalkynoate, malononitrile (or ethyl cyanoacetate), and diverse cyclic 1,3-diketones. Moderate to good yields (up to 93%) were obtained in the presence of catalytic methylamine. This process went through a tandemMichaeladdition–cyclizationreaction and was mild and easily