[EN] CHIRAL DIOLS, THEIR MANUFACTURE AND LIGANDS AND CATALYSTS DERIVED THEREFROM [FR] NOUVEAUX DIOLS CHIRAUX, FABRICATION, LIGANDS ET CATALYSEURS DERIVES DE CES DIOLS
Asymmetric synthesis based on chiral diamines having pyrrolidine ring
作者:Teruaki Mukaiyama
DOI:10.1016/s0040-4020(01)93286-7
日期:——
Various highly stereoselective asymmetric reactions based on chiral diamines having pyrrolidine ring are described. Some of these reactions have been successfully applied to the syntheses of natural products.
Highly Diastereoselective Reaction of Chiral o-(2-(1,3-Oxazolidinyl))benzaldehydes with Alkylmetallic Reagents: Synthesis of Chiral 3-Substituted Phthalides.
Highly diastereoselective reaction of chiral o-[2-(1, 3-Oxazolidinyl)]benzaldehydes (4-6) with alkylmetallic reagents provides a new synthetic method for chiral 3-alkylphthalides.
Chiral diols, their manufacture and ligands and catalysts derived therefrom
申请人:Berens Ulrich
公开号:US20060030737A1
公开(公告)日:2006-02-09
The present invention relates to a method for the preparation of C
2
-symmetric 1,4-diols of the formula IVA or IVB, wherein ring A, R
1
and R
2
have the meanings given in the specification, that makes use of the metallation of pure enantiomers of α-(aryl or heteroaryl)-α-substituted alkanol compounds or the use of said alkanol compounds in the preparation of said mmetric 1,4-diols; novel C
2
-symmetric 1,4-diols in enantiomerically pure form; and methods of use or their use in the synthesis of chiral ligands which find use to produce catalysts for a variety of asymmetric transformations such as hydrogenations.
A facile synthesis of optically active 3-ethyl- and 3-butylphthalides via catalytic enantioselective addition of dialkylzinc reagents to o-phthalaldehyde