Chiral 1,3-aminosquaramides derived from cis-2-benzamidocyclohexanecarboxylic acid as organocatalysts for asymmetric Michael addition reactions
作者:Koichi Kodama、Kazuhisa Maruyama、Takuji Hirose
DOI:10.1016/j.tet.2022.132750
日期:2022.4
Herein, chiral 1,3-aminosquaramides derived from cis-2-benzamidocyclohexanecarboxylic acid, which is a chiral β-amino acid derivative, were synthesized and applied as bifunctional organocatalysts for asymmetric Michael addition reaction of 1,3-dicarbonyl compounds to β-nitrostyrenes. The catalyst structure and reaction conditions, such as solvent and temperature, were examined, and then, the optimized
在此,合成了由顺式-2-苯甲酰胺基环己烷羧酸衍生的手性1,3-氨基方酰胺,它是一种手性β-氨基酸衍生物,并将其用作双功能有机催化剂,用于1,3-二羰基化合物与β-硝基苯乙烯的不对称迈克尔加成反应。 . 考察了催化剂的结构和反应条件,如溶剂和温度,优化后的有机催化剂成功应用于1,3-二酮和1,3-酮酯的反应,对映选择性高达96%。根据先前报告中报告的结果和 DFT 计算提出了合理的过渡状态。