Pd-Catalyzed Asymmetric Dearomatization of Indoles via Decarbonylative Heck-Type Reaction of Thioesters
作者:Ming-Liang Han、Wei Huang、Yu-Wen Liu、Min Liu、Hui Xu、Hai Xiong、Hui-Xiong Dai
DOI:10.1021/acs.orglett.0c03897
日期:2021.1.1
We report herein a palladium-catalyzed ligand-promoted asymmetricdearomatization of indoles via the decarbonylation of thioesters and the subsequent reductive Heck reaction. This protocol provides a facile and efficient way to construct an aza-quaternary stereocenter at the C2 position of indolines. A variety of functional groups and substitutions could be well tolerated, affording the substituted
Compounds of the present invention and pharmaceutically acceptable compositions thereof, are useful as modulators of ATP-Binding Cassette (“ABC”) transporters or fragments thereof, including Cystic Fibrosis Transmembrane Conductance Regulator (“CFTR”). The present invention also relates to methods of treating ABC transporter mediated diseases using compounds of the present invention.
Compounds of the present invention and pharmaceutically acceptable compositions thereof, are useful as modulators of ATP-Binding Cassette (“ABC”) transporters or fragments thereof, including Cystic Fibrosis Transmembrane Conductance Regulator (“CFTR”). The present invention also relates to methods of treating ABC transporter mediated diseases using compounds of the present invention.
A novel and efficient palladium-catalyzed annulation of anilines with bromoalkynes for the synthesis of 2-phenylindoles has been described. This approach features excellent regio- and stereoselectivities and good functional group tolerance. Preliminary mechanistic studies indicate that anilines undergo anti-nucleophilic addition to bromoalkynes to generate (Z)-N-(2-bromo-1-phenylvinyl) anilines, followed
已经描述了用于合成 2-苯基吲哚的新型和有效的钯催化的苯胺与溴炔的环化。这种方法具有出色的区域选择性和立体选择性以及良好的官能团耐受性。初步的机理研究表明,苯胺对溴代炔烃进行反亲核加成反应生成 ( Z )- N -(2-bromo-1-phenylvinyl) 苯胺,然后依次进行 C-H 官能化以提供不同的取代 2-苯基吲哚。该方法为构建各种生物活性化合物提供了潜在的应用。
Cascade Reactions of Aryl‐Substituted Terminal Alkynes Involving in Situ‐Generated α‐Imino Gold Carbenes
作者:Qiaoying Sun、Christopher Hüßler、Justin Kahle、Alexandra V. Mackenroth、Matthias Rudolph、Petra Krämer、Thomas Oeser、A. Stephen K. Hashmi
DOI:10.1002/anie.202313738
日期:2024.1.25
was achieved. It proceeds via an intermolecular gold carbene generation/C−H annulation followed by a 6-endo-dig cyclization or Pictet–Spengler reactions to selectively form fused indoles. The formation of 2-substitutedindoles and imidazoles derivatives through gold-catalyzed cyclization is also presented.