Transition-Metal-Free Ring-Opening Silylation of Indoles and Benzofurans with (Diphenyl-<i>tert</i>
-butylsilyl)lithium
作者:Pan Xu、Ernst-Ulrich Würthwein、Constantin G. Daniliuc、Armido Studer
DOI:10.1002/anie.201707309
日期:2017.10.23
A practical method is presented for ring opening various indoles and benzofurans with concomitant stereoselective silylation using readily generated (diphenyl‐tert‐butylsilyl)lithium to afford ortho‐β‐silylvinylanilines or ‐phenols. Dearomatization of the heteroarene core proceeds in the absence of any transition‐metal catalyst through addition of a silyl anion and a subsequent stereoselective β‐elimination
Palladium-Catalyzed Three-Component Regioselective Dehydrogenative Coupling of Indoles, 2-Methylbut-2-ene, and Carboxylic Acids
作者:Xing-Long Zhang、Rui-Li Guo、Meng-Yue Wang、Bao-Yin Zhao、Qiong Jia、Jin-Hui Yang、Yong-Qiang Wang
DOI:10.1021/acs.orglett.1c03776
日期:2021.12.17
Five-carbon (C5) structural units are the fundamental building blocks of many natural products. An unprecedented palladium-catalyzed three-component dehydrogenative cascade coupling of indoles, 2-methylbut-2-ene, and carboxylicacids has been developed. The approach enables the straightforward introduction of a C3′-bonded five-carbon structural unit with a tertiary alcohol quaternary carbon center
Convenient Syntheses of Benzo-Fluorinated Dibenz[<i>b</i>,<i>f</i>]azepines: Rearrangements of Isatins, Acridines, and Indoles
作者:Emma-Claire Elliott、Elizabeth R. Bowkett、James L. Maggs、John Bacsa、B. Kevin Park、Sophie L. Regan、Paul M. O’Neill、Andrew V. Stachulski
DOI:10.1021/ol202318w
日期:2011.10.21
Efficient procedures for the synthesis of benzo-fluorinated dibenz[b,f]azepines (iminostilbenes) from fluorinated isatins or indoles using a number of ring-expansion reactions are described. A range of mono- and difluorinated analogues is accessible, and the syntheses can deliver gram quantities of the final products, which are precursors of fluoro analogues of the important anticonvulsant carbamazepine
N-(1-Oxy-2-picolyl)oxalamic acids as a new type of O,O-ligands for the Cu-catalyzed N-arylation of azoles with aryl halides in water or organic solvent
作者:Yongbin Wang、Yu Zhang、Beibei Yang、Ao Zhang、Qizheng Yao
DOI:10.1039/c5ob00045a
日期:——
identified as novel efficient ligands for copper-catalyzed C–N cross-coupling of azoles and arylhalides in water. The N-arylation of imidazoles, indoles and pyrazoles proceeded with moderate to excellent yields and complete selectivity over aromatic amines and phenols. Moreover, L5, which is also efficient in organic solvent with low catalyst loading, can be used to promote the N-arylation reactions with
Substituted anilinic piperidines as MCH selective antagonists
申请人:Marzabadi R. Mohammad
公开号:US20070043080A1
公开(公告)日:2007-02-22
This invention is directed to compounds which are selective antagonists for melanin concentrating hormone-1 (MCH1) receptors. The invention provides a pharmaceutical composition comprising a therapeutically effective amount of the compound of the invention and a pharmaceutically acceptable carrier. This invention provides a pharmaceutical composition made by combining a therapeutically effective amount of the compound of this invention and a pharmaceutically acceptable carrier. This invention further provides a process for making a pharmaceutical composition comprising combining a therapeutically effective amount of the compound of the invention and a pharmaceutically acceptable carrier.