Synthesis and application in asymmetric C–C bond formation of solution phase ligand libraries of monodentate phosphoramidites
作者:Ate Duursma、Laurent Lefort、Jeroen A. F. Boogers、André H. M. de Vries、Johannes G. de Vries、Adriaan J. Minnaard、Ben L. Feringa
DOI:10.1039/b404996a
日期:——
A library of 96 unique monodentate phosphoramidite ligands has been synthesized in solution and used in the asymmetric conjugate addition of potassium vinyltrifluoroborate to enones resulting in up to 88% ee.
Catalytic Asymmetric Alkynylation and Arylation of Aldehydes by an H
<sub>8</sub>
‐Binaphthyl‐Based Amino Alcohol Ligand
作者:Jiwu Ruan、Gui Lu、Lijing Xu、Yue‐Ming Li、Albert S. C. Chan
DOI:10.1002/adsc.200700215
日期:2008.1.4
prepared in situ) to aldehydes, yielding the corresponding optically active propargylic alcohols and diarylmethanols in high yields and good to excellent enantioselectivities. For the asymmetricarylation reaction, one catalyst (1Ra,2S,3R)-2 can afford both enantiomers of many pharmaceutically interesting diarylmethanols by a proper combination of various arylzinc reagents and aldehydes.
合成了一种新型的手性H 8 -1,1'-联萘基氨基醇配体(1 R a,2 S,3 R)-2,并用于有机锌的直接亲核加成(炔基锌和芳基锌原位制备)生成醛类,以高收率和良好至优异的对映选择性产生相应的旋光炔丙醇和二芳基甲醇。对于不对称芳基化反应,一种催化剂(1 R a,2 S,3 R)-2 通过适当地组合各种芳基锌试剂和醛,可以提供许多药学上感兴趣的二芳基甲醇的两种对映异构体。