An efficient synthesis of 3-ethoxypyrrolidine-2,5-diones and cis-2,3,3a,6a-tetrahydrofuro[2,3-c]pyrrole-4,6(5H)-diones from β-cyanocarboxylic acids
作者:Nilo Zanatta、Fabio M. da Silva、Andreia M. P. W. da Silva、Estefania da C. Aquino、Helio G. Bonacorso、Marcos A. P. Martins
DOI:10.3998/ark.5550190.0013.901
日期:——
A simple and convenient procedure for the synthesis of a new series of 3-ethoxypyrrolidine-2,5- diones and cis-2,3,3a,6a-tetrahydrofuro(2,3-c)pyrrole-4,6(5H)-diones derivatives is described. All compounds were obtained from the direct cyclization of two β-cyanocarboxylic acids with primary amines and amino alcohols in short reaction time and good yields.
合成新系列 3-乙氧基吡咯烷-2,5-二酮和顺式-2,3,3a,6a-四氢呋喃(2,3-c)吡咯-4,6(5H)-的简便方法描述了二酮衍生物。所有化合物均由两种β-氰基羧酸与伯胺和氨基醇在短反应时间内直接环化获得,收率良好。