Solvent- and Metal-free Oxidative Esterification of Aromatic Aldehydes Using Urea-2,2-dihydroperoxypropane as a New Solid Oxidant
作者:Kaveh Khosravi、Kobra Khalaji、Shirin Naserifar
DOI:10.1002/jccs.201600777
日期:2017.3
Urea‐2,2‐dihydroperoxypropane as a noble and solid gem‐dihydroperoxide derivative was used to transform various aromaticaldehydes to their corresponding benzoate derivatives in the presence of HBr under mild conditions at room temperature in high yields and short reaction times.
METHOD FOR SYNTHESIZING O-DIPHENYLPHOSPHINO BENZOIC ACID
申请人:Sinomax Chemical Technology Co., Ltd
公开号:EP2383275A1
公开(公告)日:2011-11-02
The present invention relates to a method for synthesis of o-diphenylphosphinobenzoic acid which includes the steps as follows: using chlorodiphenylphosphine as starting material, chlorodiphenylphosphine and alkali metal are added to the solvent to conduct cracking, which produces a diphenyl phosphine alkali metal salt, then o-chlorobenzoic acid salt or o-chlorobenzoic acid ester is added to conduct coupling reaction to produce diphenylphosphinobenzoic acid salt or diphenylphosphinobenzoic acid ester, o-diphenylphosphinobenzoic acid is obtained after hydrolysis. o-diphenylphosphinobenzoic acid can be prepared under atmospheric pressure at tempreture above 0°C by using the present method. The method is safe and stable to operate and can save a lot of energy, thus being suitable for large-scale production.
Procatalysts, catalyst systems, and use in olefin polymerization
申请人:——
公开号:US20010025005A1
公开(公告)日:2001-09-27
There are described solid procatalysts, catalyst systems incorporating the solid procatalysts, and the use of the catalyst systems in olefin polymerization and interpolymerization.
本文介绍了固体原催化剂、含有固体原催化剂的催化剂体系以及催化剂体系在烯烃聚合和互聚中的应用。
Procatalysts, catalyst systems, and use in OLEFIN polymerization
申请人:——
公开号:US20010029286A1
公开(公告)日:2001-10-11
There are described solid procatalysts, catalyst systems incorporating the solid procatalysts, and the use of the catalyst systems in olefin polymerization and interpolymerization.