Suzuki-type coupling of chloroarenes with arylboronic acids catalysed by nickel complexes
作者:Adriano F. Indolese
DOI:10.1016/s0040-4039(97)00707-7
日期:1997.5
A Suzuki-type cross-coupling reaction of aryl chlorides with arylboronicacids using nickel-catalysts is described. The best results were obtained at 95 °C in the presence of K3PO4 and in dioxane using Ni(dppf)Cl2. Unsymmetrical biaryls with both electron-withdrawing and electron-donating functional groups were obtained in high yields.
描述了使用镍催化剂的芳基氯与芳基硼酸的Suzuki型交叉偶联反应。在K 3 PO 4存在下,在95°C和使用Ni(dppf)Cl 2在二恶烷中获得最佳结果。具有高吸收率的同时具有吸电子和给电子官能团的不对称联芳基。
Process for the preparation of substituted 3-aminobenzonitriles
申请人:Novartis Finance Corporation
公开号:US05883283A1
公开(公告)日:1999-03-16
The invention relates to a process for the preparation of substituted 3-amninobenzonitriles, which comprises reacting the appropriate substituted 3-aminochlorobenzene with a cyano-donating reagent, and to the compounds thereby produced. The compounds are intermediates, which after further reaction, produce 1,2,3-benzothiadiazole-derivatives having plant immunizing properties.
Process for the preparation of 2-amino-6-chlorophenyl-alkylsulfanes, and
申请人:Bayer Aktiengesellschaft
公开号:US05872300A1
公开(公告)日:1999-02-16
2-Amino-6-chlorophenyl-alkylsulfanes are prepared in a particularly advantageous manner by hydrogenating 2-chloro-6-nitrophenyl-alkylsulfanes catalytically in the presence of a solvent without the addition of a further sulfur compound, and the novel compound 2-amino-6-chlorophenyl-isopropylsulfane is provided.
Verfahren zur Herstellung von 2-Amino-6-chlorphenyl-alkylsulfanen und 2-Amino-6-chlorphenyl-isopropylsulfan
申请人:BAYER AG
公开号:EP0775693A1
公开(公告)日:1997-05-28
2-Amino-6-chlorphenyl-alkylsulfane werden in besonders vorteilhafter Weise hergestellt, indem man 2-Chlor-6-nitrophenyl-alkylsulfane ohne Zusatz einer weiteren Schwefelverbindung in Gegenwart eines Lösungsmittels katalytisch hydriert und die neue Verbindung 2-Amino-6-chlorphenyl-isopropylsulfan zur Verfügung gestellt.