Catalytic Enantioselective Dibromination of Allylic Alcohols
作者:Dennis X. Hu、Grant M. Shibuya、Noah Z. Burns
DOI:10.1021/ja4083182
日期:2013.9.4
A new dibromination reaction involving the combination of dibromomalonate as the bromonium source and a titanium bromide species as the bromide source has been developed. Enantioselective catalysis has been achieved through apparent ligand acceleration by a tartaric acid-derived diol.
Novel chiral derivatizing reagent for the determination of enantiomeric excesses
申请人:Institut Catala D'Investigacio Quimica
公开号:EP1750119A1
公开(公告)日:2007-02-07
A method for the determination of the enantiomeric composition of a chiral compound comprising (a) derivatising said chiral compound with a enantiomerically and diastereomerically pure compound of general formula I and (b) analysing the resulting mixture by an analytic technique.
wherein Ar is an optionally substituted aromatic or heteroaromatic group.
Bravo, Pierfrancesco; Piovosi, Elena; Resnati, Giuseppe, Journal of the Chemical Society. Perkin transactions I, 1989, p. 1201 - 1208
作者:Bravo, Pierfrancesco、Piovosi, Elena、Resnati, Giuseppe
DOI:——
日期:——
(<i>S</i>)-2-[(<i>R</i>)-Fluoro(phenyl)methyl]oxirane: A General Reagent for Determining the ee of α-Chiral Amines
作者:Sergi Rodríguez-Escrich、Dana Popa、Ciril Jimeno、Anton Vidal-Ferran、Miquel A. Pericàs
DOI:10.1021/ol1008735
日期:2010.7.2
ring-opening fluorination of [(2S,3S)-3-phenyloxiran-2-yl]methyl p-toluenesulfonate, previously identified as proceeding with inversion,(2) takes place with retention of configuration. Accordingly, the configuration at C-3 in structures 1, 3, and 5 in this publication must be changed from R to S. The title should refer to (S)-2-[(S)-fluoro(phenyl)methyl]oxirane, and Schemes 1 and 2 should be replaced by the following