Chelation-assisted rhodium hydride-catalyzed regioselective H/D exchange in arenes
摘要:
A series of air stable rhodium(III) hydride complexes are synthesized Via cyclometalation of functionalized arenes, and are active catalysts for regioselective H/D exchange in various arenes via chelation-assisted C-H activation in acetone-d(6). (C) 2008 Elsevier Ltd. All rights reserved.
A General, Multimetallic Cross-Ullmann Biheteroaryl Synthesis from Heteroaryl Halides and Heteroaryl Triflates
作者:Kai Kang、Nathan L. Loud、Tarah A. DiBenedetto、Daniel J. Weix
DOI:10.1021/jacs.1c10907
日期:2021.12.29
medicine and materials science, the synthesis of biheteroaryls by cross-coupling remains challenging. We describe here a new, general approach to biheteroaryls: the Ni- and Pd-catalyzed multimetallic cross-Ullmann coupling of heteroaryl halides with triflates. An array of 5-membered, 6-membered, and fused heteroaryl bromides and chlorides, as well as aryltriflates derived from heterocyclic phenols,
[EN] PROCESS FOR PREPARING 1-ARYLSULFONYL-PYRROLIDINE-2-CARBOXAMIDE TRANSIENT RECEPTOR POTENTIAL CHANNEL ANTAGONIST COMPOUNDS AND CRYSTALLINE FORMS THEREOF<br/>[FR] PROCÉDÉ DE PRÉPARATION DE COMPOSÉS ANTAGONISTES DU CANAL POTENTIEL DE RÉCEPTEUR TRANSITOIRE DE 1-ARYLSULFONYL-PYRROLIDINE-2-CARBOXAMIDE ET FORMES CRISTALLINES ASSOCIÉES
申请人:GENENTECH INC
公开号:WO2019164778A1
公开(公告)日:2019-08-29
The invention relates generally to methods of preparing 1-arylsulfonyl-pyrrolidine-2-carboxamide Transient Receptor Potential channel antagonist compounds of the following structure (I): (I) The invention further relates to solvate and co-crystal polymorphs of crystalline formula (I), and methods of preparation thereof.
(2 mol%) was found to be an efficient catalyst for the Suzuki–Miyaura cross couplingreaction between aryl bromide and aryl boronic acid in water solvent at 45 °C. The scope of the protocol was extended to various aryl bromides and aryl boronic acids. In general, an effective method has been developed for the Suzuki–Miyaura cross couplingreaction by using a phosphine-free Pd catalyst.
The photochemical arylation of pyrimidines and pyrazines proceeds smoothly under moderate UVA irradiation and allows us to obtain high-value biaryl compounds through radical intermediates.
Kumada-Corriu Cross-Couplings with 2-Pyridyl Grignard Reagents
作者:Lutz Ackermann、Harish K. Potukuchi、Anant R. Kapdi、Carola Schulzke
DOI:10.1002/chem.201000032
日期:2010.3.15
SPOs meet the challenge: A palladium complex derived from air‐ and moisture‐stable secondaryphosphineoxide (SPO) (1‐Ad)2P(O)H enables general cross‐couplingreactions of challenging electron‐deficient 2‐pyridyl Grignard reagents with ample scope (see scheme).