Expedited Palladium-Catalyzed Amination of Aryl Nonaflates through the Use of Microwave-Irradiation and Soluble Organic Amine Bases
作者:Rachel E. Tundel、Kevin W. Anderson、Stephen L. Buchwald
DOI:10.1021/jo052131u
日期:2006.1.1
Microwave-assisted, palladium-catalyzed C−N bond-forming reactions with aryl/heteroaryl nonaflates and aminesusing the soluble aminebases DBU (1,8-diazabicyclo[5.4.0]undec-7-ene) or MTBD (7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene) and ligands (1−3) resulted in good to excellent yields (71−99%) of arylamines in short reaction times (1−45 min).
Regioselectively substituted indoles are prepared by a Pd‐catalyzed CC/CN bond‐forming sequence fromimines and o‐dihaloarenes or o‐haloarene sulfonates. The heterogeneous reaction as a suspension in water and under microwave heating offers important advantages in comparison with the conventional reaction in an organic solvent, among them, operational simplicity, the employment of KOH solutions instead
区域选择性取代的吲哚通过Pd催化的C中制备 C / C N键形成序列从亚胺和ö -dihaloarenes或ö -haloarene磺酸盐。与在有机溶剂中的常规反应相比,在水中和微波加热下作为悬浮液的非均相反应具有重要的优势,其中包括操作简便,使用KOH溶液代替醇盐以及显着减少反应时间。
Dielectric liquids
申请人:MINNESOTA MINING AND MANUFACTURING COMPANY
公开号:EP0545430A1
公开(公告)日:1993-06-09
A dielectric liquid is provided comprising (a) a fluorinated, inert liquid, or a mixture of fluorinated, inert liquids and (b) a fluorine-containing, nonionic sulfonate ester or sulfonamide, such that the dielectric liquid has a dielectric constant intermediate or between that of component (a) and component (b) and the dielectric constant represents the relative amounts of the relatively lower dielectric constant of the fluorinated, inert liquid per se and the relatively higher dielectric constant of the sulfonate ester or sulfonamide per se and components (a) and (b) of the dielectric liquid are miscible with one another over the operating temperature range of the electrical device employing the dielectric liquid.