[EN] TRIAZOLIUM CARBENE CATALYSTS AND PROCESSES FOR ASYMMETRIC CARBON-CARBON BOND FORMATION [FR] CATALYSEURS À BASE DE CARBÈNE DE TRIAZOLIUM ET PROCÉDÉS POUR FORMER DES LIAISONS CARBONE-CARBONE ASYMÉTRIQUES
HETEROCYCLIC TRIAZOLE COMPOUNDS AS AGONISTS OF THE APJ RECEPTOR
申请人:AMGEN INC.
公开号:US20170320860A1
公开(公告)日:2017-11-09
Compounds of Formula I and Formula II, pharmaceutically acceptable salts thereof, stereoisomers of any of the foregoing, or mixtures thereof are agonists of the APJ Receptor and may have use in treating cardiovascular and other conditions. Compounds of Formula I and Formula II have the following structures:
where the definitions of the variables are provided herein.
<i>N</i>-<i>tert</i>-Butyl Triazolylidenes: Catalysts for the Enantioselective (3+2) Annulation of α,β-Unsaturated Acyl Azoliums
作者:Lisa Candish、Craig M. Forsyth、David W. Lupton
DOI:10.1002/anie.201304081
日期:2013.8.26
range of N‐tert‐butyl‐substituted triazolylidene N‐heterocyclic carbenes have been prepared. Of these, the morpholinone‐derived catalyst (1) proved best suited to the enantioselective synthesis of cyclopentanes from donor–acceptor cyclopropanes and α,β‐unsaturated acyl fluorides. The performance of this catalyst has been correlated to the electronic nature of the catalyst by 13C NMR analysis. M.S.=molecular
但(基)不徒劳:的范围ñ -叔已经制备丁基取代triazolylidene N-杂环卡宾。其中,吗啉酮衍生的催化剂(1)被证明最适合从供体-受体环丙烷和α,β-不饱和酰基氟对映体选择性合成环戊烷。通过13 C NMR分析,该催化剂的性能与催化剂的电子性质相关。MS =分子筛,TMS =三甲基甲硅烷基。
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
Catalytic Asymmetric Intermolecular Stetter Reaction of Heterocyclic Aldehydes with Nitroalkenes: Backbone Fluorination Improves Selectivity
作者:Daniel A. DiRocco、Kevin M. Oberg、Derek M. Dalton、Tomislav Rovis
DOI:10.1021/ja904375q
日期:2009.8.12
The catalyticasymmetricintermolecularStetterreaction of heterocyclic aldehydes and nitroalkenes has been developed. We have identified a strong stereoelectronic effect on catalyst structure when a fluorine substituent is placed in the backbone. X-ray structure analysis provides evidence that hyperconjugative effects are responsible for a change in conformation in the azolium precatalyst. This new
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.