Diastereoselective enzymatic synthesis of highly substituted 3,4-dihydropyridin-2-ones via domino Knoevenagel condensation–Michael addition–intramolecular cyclization
作者:Zhi-Qiang Liu、Bo-Kai Liu、Qi Wu、Xian-Fu Lin
DOI:10.1016/j.tet.2011.09.086
日期:2011.12
A direct method to construct 3,4-dihydropyridin-2-ones by enzymatic condensation of aldehyde with cyanoacetamide and 1,3-dicarbonyl compounds was developed. One ring and four new bonds (two C–C, one C–N, one CC) were formed in one pot. And reaction conditions involving hydrolases, solvents, substrate molar ratios, and hydrolase loading were optimized. A series of new compounds based on the 3,4-dihydropyridin-2-one
提出了通过醛与氰基乙酰胺和1,3-二羰基化合物的酶促缩合反应构建3,4-二氢吡啶-2-酮的直接方法。一锅中形成了一个环和四个新键(两个C–C,一个C–N,一个C C)。并优化了涉及水解酶,溶剂,底物摩尔比和水解酶负载的反应条件。通过前所未有的三组分多米诺反应,合成了一系列基于3,4-二氢吡啶-2--2-核的新化合物。