Palladium-Catalyzed Decarboxylative Couplings of 2-(2-Azaaryl)acetates with Aryl Halides and Triflates
作者:Rui Shang、Zhi-Wei Yang、Yan Wang、Song-Lin Zhang、Lei Liu
DOI:10.1021/ja107103b
日期:2010.10.20
Pd-catalyzed decarboxylative cross-couplings of 2-(2-azaaryl)acetates with arylhalides and triflates have been discovered. This reaction is potentially useful for the synthesis of some functionalized pyridines, quinolines, pyrazines, benzoxazoles, and benzothiazoles. Theoretical analysis shows that the nitrogen atom at the 2-position of the heteroaromatics directly coordinates to Pd(II) in the decarboxylation
[EN] CYCLOHEXYL ACID TRIAZOLE AZINES AS LPA ANTAGONISTS<br/>[FR] AZINES TRIAZOLES D'ACIDE CYCLOHEXYLE UTILISÉES EN TANT QU'ANTAGONISTES DE LPA
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2019126093A1
公开(公告)日:2019-06-27
The present invention provides compounds of Formula (I): Formula (I) or a stereoisomer, tautomer, or pharmaceutically acceptable salt or solvate thereof, wherein all the variables are as defined herein. These compounds are selective LPA receptor inhibitors.
Treatment of 2-chloropyridine with benzylmagnesium chloride in the presence of a catalytic amount of cobalt(II) acetylacetonate in dioxane afforded the corresponding cross-coupling product in excel...
在二恶烷中催化量的乙酰丙酮钴 (II) 存在下,用苄基氯化镁处理 2-氯吡啶,得到相应的交叉偶联产物,性能优异。
Selective mono-alkylation and arylation of aromatic dihalides by palladium-catalyzed cross-coupling with the Grignard and organozinc reagents
Dibromobenzene, dibromothiophenes, dichloro- and dibromopyridine are highly selectively mono-alkylated and arylated with Grignard or organozinc reagents in the presence of palladium complexes as catalysts.
Overcoming Electron-Withdrawing and Product-Inhibition Effects by Organocatalytic Aerobic Oxidation of Alkylpyridines and Related Alkylheteroarenes to Ketones
作者:Hua Wang、Jie Liu、Jian-Ping Qu、Yan-Biao Kang
DOI:10.1021/acs.joc.9b03205
日期:2020.3.6
An organocatalyzed aerobic benzylic C-H oxidation of alkyl and aryl heterocycles has been developed. This transition metal-free method is able to overcome the electron-withdrawing effect as well as product-inhibition effects in heterobenzylic radical oxidation. A variety of ketones bearing N-heterocyclic groups could be prepared under relatively mild conditions with moderate to high yields.