[EN] PROCESS FOR ASYMETRIC METHYLALLYLATION IN THE PRESENCE OF A 2, 2 ' - SUBSTITUTED 1, 1 ' -BI - 2 -NAPHTHOL CATALYST [FR] PROCÉDÉ POUR MÉTHYLALLYLATION ASYMÉTRIQUE EN PRÉSENCE D'UN CATALYSEUR NAPHTOL-2-BI-1,1' SUBSTITUÉ 2, 2'
Asymmetric Methallylation of Ketones Catalyzed by a Highly Active Organocatalyst 3,3′-F<sub>2</sub>-BINOL
作者:Yongda Zhang、Ning Li、Bo Qu、Shengli Ma、Heewon Lee、Nina C. Gonnella、Joe Gao、Wenjie Li、Zhulin Tan、Jonathan T. Reeves、Jun Wang、Jon C. Lorenz、Guisheng Li、Diana C. Reeves、Ajith Premasiri、Nelu Grinberg、Nizar Haddad、Bruce Z. Lu、Jinhua J. Song、Chris H. Senanayake
DOI:10.1021/ol400498a
日期:2013.4.5
(S)-3,3'-F-2-BINOL has been synthesized for the first time and demonstrated as a highly active organocatalyst for asymmetric methallylation of ketones. Up to 98:2 enantioselectivity and 99% yield were obtained with 5 mol % catalyst loading. The catalyst (S)-3,3'-F-2-BINOL could be easily recovered and reused.
PROCESS FOR ASYMETRIC METHYLALLYLATION IN THE PRESENCE OF A 2, 2 ' - SUBSTITUTED 1, 1 ' -BI - 2 -NAPHTHOL CATALYST
申请人:Boehringer Ingelheim International GmbH
公开号:EP2683678A1
公开(公告)日:2014-01-15
PROCESS FOR ASYMETRIC METHYLALLYLATION IN THE PRESENCE OF A 2,2'-SUBSTITUTED 1,1'-BI -2-NAPHTHOL CATALYST
申请人:Li Wenjie
公开号:US20140171692A1
公开(公告)日:2014-06-19
Disclosed are a process and catalysts useful for carrying out asymmetric methlyallylations. The catalysts used in the invention have the formula (IV): wherein X
1
, X
2
, R
3
and R
4
are as defined herein. Compounds made by the process of the invention can be used to prepare pharmaceutically active compounds such as 11-β-hydroxysteroid hydrogenase type 1 (11-β-HSD1) inhibitors including 1,3-disubstituted oxazinan-2-ones.