catalysts, the enantioselective nucleophilicsubstitution reaction at the chiral sp3‐hybridized carbon atom of a racemic electrophile has not been largely explored. Herein, we report the enantioconvergent propargylicsubstitution reaction of racemic propargylicalcohols with thiols using chiral bis‐phosphoric acid as the chiral Brønsted acid catalyst. The substitution products were formed in high yields
This invention relates to 1-phenyl-3-aryl-2-propyne-1-ones, the use of these compounds as calcium uptake inhibitors in leukocytes and thrombocytes, and pharmaceutical compositions containing these compounds as active ingredients, and the process of their preparation.
1-phenyl-3-aryl-2-propyne-1-one useful as calcium uptake inhibitors
申请人:Merrell Dow Pharmaceuticals Inc.
公开号:US05223518A1
公开(公告)日:1993-06-29
This invention relates to 1-phenyl-3-aryl-2-propyne-1-ones, the use of these compounds as calcium uptake inhibitors in leukocytes and thrombocytes, and pharmaceutical compositions containing these compounds as active ingredients, and the process of their preparation.
Pd-Catalyzed Intermolecular Carbonylative Dearomatization of Arylamines with Propargylic Acetates for Synthesis of Bridged Polycyclic Lactams
作者:Qi Xue、Ren Wang、Wen-Yu Zhang、Fang-Fang Shen、Yang Li、Qing Sun、Jin-Heng Li
DOI:10.1021/acs.orglett.3c01344
日期:2023.6.16
A new palladium-catalyzed multicomponent dearomatization of arylamines with CO and propargylic acetates for the synthesis of bridged polycyclic lactams is described. This method allows double annulation at the ipso and para positions of the amino group to form four new bonds, three C–C bonds and one C–N bond. DFT calculations and experimental studies indicate that the efficient formation of the allenecarboxanilide
描述了一种新的钯催化芳基胺与 CO 和炔丙基乙酸酯的多组分脱芳构化反应,用于合成桥接多环内酰胺。该方法允许在氨基的ipso和para位置双环化以形成四个新键,三个 C-C 键和一个 C-N 键。DFT计算和实验研究表明,高效形成丙二烯甲酰苯胺中间体是实现脱芳烃转化的关键步骤。