Buchwald-Hartwig Aminations of Aryl Chlorides: A Practical Protocol Based on Commercially Available Pd(0)-NHC Catalysts
作者:L. J. Gooßen、A. Rivas-Nass、J. Paetzold、O. Briel、R. Karch、B. Kayser
DOI:10.1055/s-2004-837205
日期:——
naphthoquinone imidazolin-2-ylidene-palladium(0) complexes were found to be highlyactive one-component catalysts for the amination of aryl halides. With these very robust catalysts, the expensive bases Cs 2 CO 3 or NaOt-Bu traditionally used can be replaced by KOH. A convenient reaction protocol has been developed for the coupling of a wide range of arylchlorides with primary or secondary amines.
The invention relates to a seal swell agent which is a substituted sulfonyldibenzene compound, and lubricating compositions containing the seal swell agent. The substituents on the benzene rings may be hydrocarbyl groups of 4 to 20 carbon atoms or alkylene groups of 1-2 carbon atoms with further functional groups.
An antioxidant additives combination for lubricants containing a molybdenum complex and an alkylated phenothiazine
申请人:ETHYL CORPORATION
公开号:EP1369469A1
公开(公告)日:2003-12-10
A lubricating oil composition having improved antioxidant properties, contains a molybdenum compound and an alkylated phenothiazine and may also include a secondary diarylamine.
A release additive composition including at least one overbased detergent present in a form chosen from a solid and a semi-solid is disclosed. Also disclosed is a lubrication system and a method of improving the drain interval of oil.
Gel additives for fuel that reduce soot and/or emissions from engines
申请人:The Lubrizol Corporation
公开号:EP2243816A1
公开(公告)日:2010-10-27
The invention relates to using a gel as an additive for fuel in a fuel system for decreasing the amount of soot in the lubricating oil of an engine and/or decreasing the emissions from an engine.