TRIAZOLIUM CARBENE CATALYSTS AND PROCESSES FOR ASYMMETRIC CARBON-CARBON BOND FORMATION
申请人:Rovis Tomislav
公开号:US20130116445A1
公开(公告)日:2013-05-09
Provided herein are chiral triazolium catalysts useful for asymmetric C—C bond formation and processes for their preparation. Also provided are synthetic reactions in which these catalysts are used, in particular, in asymmetric C—C bond formation.
[EN] TRIAZOLIUM CARBENE CATALYSTS AND PROCESSES FOR ASYMMETRIC CARBON-CARBON BOND FORMATION<br/>[FR] CATALYSEURS À BASE DE CARBÈNE DE TRIAZOLIUM ET PROCÉDÉS POUR FORMER DES LIAISONS CARBONE-CARBONE ASYMÉTRIQUES
申请人:UNIV COLORADO STATE RES FOUND
公开号:WO2012009372A2
公开(公告)日:2012-01-19
Provided herein are chiral triazolium catalysts useful for asymmetric C-C bond formation and processes for their preparation. Also provided are synthetic reactions in which these catalysts are used, in particular, in asymmetric C-C bond formation.
Catalytic Asymmetric Intermolecular Stetter Reactions of Enolizable Aldehydes with Nitrostyrenes: Computational Study Provides Insight into the Success of the Catalyst
作者:Daniel A. DiRocco、Elizabeth L. Noey、K. N. Houk、Tomislav Rovis
DOI:10.1002/anie.201107597
日期:2012.3.5
triazolium salt precatalyst has been developed that efficiently promotes the asymmetricintermolecularStetterreaction of enolizablealdehydes and nitrostyrenes (see scheme). Trans fluorination of the catalyst architecture results in unparalleled reactivity and enantioselectivity in the desired transformation. A DFT studyprovides evidence of an electrostatic interaction as the source of the increased