通过使用单齿瞬时导向基团策略和钯催化的组合,成功地实现了 α-酮酯的前所未有的直接邻位C-H 芳基化和氯化。原位形成的亚胺将α-酮酯的双齿配位模式改变为单齿配位,从而实现邻位C-H活化。重要的是,由乙酸根阴离子桥接的关键双核环钯中间体通过 X 射线衍射得到了明确的特征,这有力地支持了所提出的机制。实用性进一步描述为通过随后的两步衍生化轻松获得口服抗血小板药物氯吡格雷消旋体。
[EN] NEAR-INFRARED FLUORESCENT CONTRAST BIOIMAGING AGENTS AND METHODS OF USE THEREOF<br/>[FR] AGENTS DE CONTRASTE POUR LA BIOIMAGERIE DANS LE PROCHE INFRAROUGE ET LEURS MÉTHODES D'UTILISATION
申请人:BETH ISRAEL HOSPITAL
公开号:WO2015066290A1
公开(公告)日:2015-05-07
The instant invention provides near-infrared fluorescent biological contrast agents and methods of using them.
Substituted Spiro-Compounds And The Use Thereof For Producing Medicaments
申请人:Frank Robert
公开号:US20090275628A1
公开(公告)日:2009-11-05
The present invention relates to substituted spiro compounds, to processes for preparing them, to medicaments comprising these compounds and to the use of these compounds for producing medicaments.
Oxidant free synthesis of α-pyrones <i>via</i> an NHC-catalyzed [3 + 3] annulation of bromoenals with 2-chloro-1,3-diketones
作者:Cong Luo、Xinyi Xu、Jianfeng Xu、Xingkuan Chen
DOI:10.1039/d2ob01859d
日期:——
An NHC-catalyzed [3 + 3] annulation reaction between α-bromo enals and 2-chlorocyclohexane-1,3-diones was developed for the rapid and efficient synthesis of various 4,5,6-trisubstituted α-pyrones, which are core structures in numerous natural products and synthetic bioactive molecules, in generally good to excellent yields.