作者:Yang, Baozhen、Yang, Longkang、Lu, Chengrong、Zhao, Bei、Huang, Yizhe
DOI:10.1016/j.tetlet.2024.155175
日期:——
A combination of rare-earth metal amides RE[()] and chiral phenoxy-functionalized amino alcohol proligands was developed to realize the enantioselective Michael addition of malonates with unsaturated ketones. The reactions catalyzed by samarium amide Sm[()] were performed best together with the chiral proligand HL (HL = 2,4-di--butyl-6-((((1,2)-2-hydroxy-1,2-diphenylethyl) amino)methyl)phenol) in DCE
开发了稀土金属酰胺RE[()]和手性苯氧基官能化氨基醇配体的组合,以实现丙二酸酯与不饱和酮的对映选择性迈克尔加成。由酰胺钐 Sm[()] 催化的反应与手性配体 HL (HL = 2,4-二-丁基-6-((((1,2)-2-羟基-1,2 -二苯乙基)氨基)甲基)苯酚)在 DCE 中具有良好的基团耐受性,大多具有高至优异的产率(85–98%)和良好至优异的 ee 值(50− >99%)。还提出了可能的机制。