Asymmetric Grignard Synthesis of Tertiary Alcohols through Rational Ligand Design
作者:Bartosz Bieszczad、Declan G. Gilheany
DOI:10.1002/anie.201610462
日期:2017.4.3
enantioselective construction of tertiaryalcoholsthrough the direct addition of organomagnesium reagents to ketones. Discovered by rational ligand design based on a mechanistic hypothesis, it has an unprecedented broad scope. It utilizes a new type of chiral tridentate diamine/phenol ligand that is easily removed from the reaction mixture. It is exemplified by application to a formal asymmetric synthesis
[EN] CHIRAL DIAMINE COMPOUNDS FOR THE PREPARATION OF CHIRAL ALCOHOL AND CHIRAL AMINE<br/>[FR] COMPOSÉS DE DIAMINE CHIRALE POUR LA PRÉPARATION D'ALCOOL CHIRAL ET D'AMINE CHIRALE
申请人:UNIV DUBLIN
公开号:WO2015181182A1
公开(公告)日:2015-12-03
A process for the stereoselective preparation of a chiral alcohol or a chiral amine, the process comprising reacting a first prochiral reactant selected from the group consisting of a ketone, an aldehyde, and an inline, with a second reactant comprising a Grignard reagent, in the presence of a chiral trans-diamim of formula (1) as defined herein. Also provided is the use of the chiral trans-diamine of formula (1) in a Grignard reaction and the chiral trans-diamines per se.
Abstract An enantioselective carboxylative cyclization of propargylicalcohols and CO2 was realized under mild conditions, based on a kinetic resolution strategy, which enabled the synthesis of chiral cyclic carbonates and propargylicalcohols with promising yield and enantioselectivity simultaneously.
Chiral diamine compounds for the preparation of chiral alcohols and chiral amines
申请人:University College Dublin
公开号:US10196338B2
公开(公告)日:2019-02-05
Processes for stereoselective preparation of a chiral alcohol or a chiral amine are described. The processes include reacting a first prochiral reactant selected from the group consisting of a ketone, an aldehyde, and an imine, with a second reactant that includes a Grignard reagent, in the presence of a chiral trans-diamine of formula (1) as defined herein:
CHIRAL DIAMINE COMPOUNDS FOR THE PREPARATION OF CHIRAL ALCOHOLS AND CHIRAL AMINES
申请人:University College Dublin
公开号:US20170204036A1
公开(公告)日:2017-07-20
A process for the stereoselective preparation of a chiral alcohol or a chiral amine, the process comprising reacting a first prochiral reactant selected from the group consisting of a ketone, an aldehyde, and an imine, with a second reactant comprising a Grignard reagent, in the presence of a chiral trans-diamine of formula (1) as defined herein:
Also provided is the use of the chiral trans-diamine of formula (1) in a Grignard reaction and the chiral trans-diamines per se.