作为一种新方法,三芳基膦通过光氧化转化为相应的氧化物。在这项研究中,纤维素是从红花植物中提取的,然后被偏高碘酸钠氧化。在这种天然纤维素上支持金络合物。然后,合成了一种以 FPS 为载体的天然纤维素上的金络合物 (FPS/Au( III )),用于将氧化膦还原为具有显着化学选择性的相应膦。FPS的形态导致更高的催化活性。使用 TEM、FESEM、FTIR、TGA 和 BET 彻底表征了FPS/Au( III ) NP。
Syntheses of RuHCl(CO)(PAr3)3 and RuH2(CO)(PAr3)3 Containing Various Triarylphosphines and Their Use for Arylation of Sterically Congested Aromatic C–H Bonds
摘要:
A series of ruthenium complexes, RuHCl(CO)(PAr3)(3) and RuH2(CO)(PAr3)(3), containing various triarylphosphines were synthesized. Screening of these complexes as catalysts for direct arylation of sterically congested ortho C-H bonds of aromatic ketones improved the yields of the arylation products.
Complexes of long alkyl chain tertiary phosphines. Part I. The preparation and characterization of platinum metal complexes of long-chain tertiary phosphine ligands
作者:S. Franks、F.R. Hartley
DOI:10.1016/s0020-1693(00)89336-6
日期:1981.1
Abstract The long chain tertiary phosphine ligands (P(CnH2n+1)3 and P CmH2m·1)3 have been used to prepare the following series of platinum, palladium and rhodium complexes: cis-[PtL2Cl2], trans-[PdL2Cl2], trans-[PtL2HCl] (L = trialkylphosphine only), [PtL4] and trans-[RhL2Cl(CO)]. The complexes are very soluble in chlorinated solvents and both aliphatic and aromatic hydrocarbons as well as tetrahydrofuran
CATALYST COMPOSITION FOR HYDROFORMYLATION REACTION AND HYDROFORMYLATION PROCESS USING THE SAME
申请人:Choi Jae-Hui
公开号:US20120059195A1
公开(公告)日:2012-03-08
The present invention relates to a catalyst composition for hydroformylation reaction and a hydroformylation process using the same. In the hydroformylation process using the catalyst composition according to the present invention, increased catalytic stability and high catalytic activity can be obtained, and the selectivity of iso-aldehyde produced can be desirably controlled.
Photochemical transformation of chlorobenzenes and white phosphorus into arylphosphines and phosphonium salts
作者:Marion Till、Verena Streitferdt、Daniel J. Scott、Michael Mende、Ruth M. Gschwind、Robert Wolf
DOI:10.1039/d1cc05691c
日期:——
Chlorobenzenes are important starting materials for the preparation of commercially valuable triarylphosphines and tetraarylphosphonium salts, but their use for the direct arylation of elemental phosphorus has been elusive. Here we describe a simple photochemical route toward such products. UV-LED irradiation (365 nm) of chlorobenzenes, white phosphorus (P4) and the organic superphotoreductant tet
SATURATED BRANCHED CHAIN FATTY ACID PRODUCTION METHOD
申请人:The United States of America, as represented by the Secretary of Agriculture
公开号:US20180186716A1
公开(公告)日:2018-07-05
Disclosed herein are processes for converting an unsaturated fatty acid into a saturated branched-chain fatty acid through a zeolite-catalyzed process and methods of economically regenerating and reusing the zeolite catalyst. The processes include subjecting the unsaturated fatty acid to an isomerization reaction to result in a selective conversion of the unsaturated fatty acid into the saturated branched-chain fatty acid. The reaction occurs in the presence of (i) an activated zeolite catalyst, (ii) an effective amount of water, and (iii) optionally an oligomerization reducing agent. The spent zeolite catalyst may be regenerated by heating to create a regenerated zeolite catalyst that is functional for use as the activated zeolite catalyst.