Results 21 to 30 of about 1,209 (177)

Hydroformylation of Vinylferrocene with Rhodium and Platinum Catalysts

CHIMIA, 1986
2- and 3-ferrocenylpropionaldehydes (2 and 3) have been prepared by highly regioselective hydroformylation of vinylferrocene (1) using rhodium and platinum catalysts.
László Kollár, Barbara Floris, Piero Pino   +2 more
doaj   +1 more source

Anionic T‐Shaped Platinum(0) Pincer Complexes and Platinum(I) Intermediates in Radical Reactions With Alkyl Halides

Angewandte Chemie, EarlyView.
Two anionic, T‐shaped, d10 platinum(0) complexes containing a PNP pincer ligand have been isolated and characterized. These complexes react with aliphatic C‐Br bonds under formation of a platinum(II) bromide and an alkyl complex, as well as the homocoupled hydrocarbons.
Vincenz J. Kohler, Julia Rößling, Tim M. Diederich, Joachim Ballmann, Regine Herbst‐Irmer, Dietmar Stalke, Lutz H. Gade   +6 more
wiley   +2 more sources

Heavier Alkyne‐Ni0 Complexes, [R2E2·Ni] (E = Sn, Pb), Exhibiting σ‐Complex Character

Angewandte Chemie, EarlyView.
Using a reductive group elimination strategy, heavier alkyne (LEEL; E = Sn, Pb) complexes of Ni0 are accessed. In contrast to classical alkyne coordination, these systems are best described as σ‐complexes, driven by ligand‐induced constraints and the established poor π‐bonding in heavier alkyne analogues.
Leopold Junge, Emeric Schubert, Israel Fernández, Terrance J. Hadlington   +3 more
wiley   +2 more sources

Hydroformylation over polyoxometalates supported single-atom Rh catalysts

National Science Open, 2023
Atomic dispersion of Rh on phosphotungstic acid (PTA) salts was achieved by a self-assembled precipitation method using alkali metal ions as coprecipitation reagents.
Feng Shixiang, Yu Qi, Ma Xinbin, Yu Xiaohu, Yan Ning   +4 more
doaj   +1 more source

Silicon-oriented regio- and enantioselective rhodium-catalyzed hydroformylation

Nature Communications, 2018
Hydroformylation of 1,2-disubstituted alkenes usually occurs at the α position of the directing heteroatom. Here, the authors report the asymmetric rhodium-catalyzed hydroformylation of 1,2-disubstituted alkenylsilanes with excellent regioselectivity at ...
Cai You, Xiuxiu Li, Yuhong Yang, Yu-Sheng Yang, Xuefeng Tan, Shuailong Li, Biao Wei, Hui Lv, Lung-Wa Chung, Xumu Zhang   +9 more
doaj   +1 more source

Contribuições recentes da reação de hidroformilação na síntese de produtos farmacêuticos: parte II Current improvement to the synthesis of pharmaceuticals by hydrofor-mylation reaction: part II

Química Nova, 1997
The hydroformylation reaction represents one of the most important C1-chemistry area in the chemical industry. This catalytic process, which has been developed up to now mainly to the production of commodities chemicals, has shown a remarkable potential ...
Carlo Botteghi, Mauro Marchetti, Gino Del Ponte   +2 more
doaj   +1 more source

Hydroformylation of Unsaturated Dicarboxylic Esters with Rhodium Containing Catalysts

CHIMIA, 1986
The regioselectivity observed in carbonyl-rhodium catalyzed hydroformylation of dimethyl itaconate (1a), which leads to the preferential formation of dimethyl 2-(formylmethyl)-butandioate (3a) is completely reversed by the modification of the catalyst ...
László Kollár, Giambattista Consiglio, Piero Pino   +2 more
doaj   +1 more source

Phosphane-Based Cyclodextrins as Mass Transfer Agents and Ligands for Aqueous Organometallic Catalysis

Molecules, 2012
The replacement of hazardous solvents and the utilization of catalytic processes are two key points of the green chemistry movement, so aqueous organometallic catalytic processes are of great interest in this context.
Eric Monflier, Hervé Bricout, Stéphane Menuel, Cécile Binkowski-Machut, Sébastien Tilloy   +4 more
doaj   +1 more source

Near‐Unity Selectivity Inversion Between CO2 Electroreduction and H2 Evolution via Atomic Coordination Editing

Advanced Science, EarlyView.
Atomic coordination editing functions as an on/off switch that toggles single‐atom catalysts between CO2 electroreduction and hydrogen evolution. ABSTRACT Precise atomic coordination editing of single‐atom catalysts (SACs) provides an effective strategy to tune their electronic structures and catalytic selectivity. Yet, achieving near‐unity selectivity
Yukun Zhao, Yuanyuan He, Mengyu Duan, Peng Yin, Jinxing Chen, Xu Han, Jie Yang, Yulin Wang, Xingjie Fu, Shibo Xi, Chuncheng Chen, Jiong Lu   +11 more
wiley   +1 more source

Hidroformilação do oleato de metila catalisada por complexos de ródio

Química Nova, 2012
In this work, we describe the hydroformylation of methyl oleate catalyzed by several rhodium complexes. Parameters including total pressure, phosphorous/rhodium and CO/H2 ratio, temperature and phosphorous ligands were scanned.
Ana Nery Furlan Mendes, Ricardo Gomes da Rosa, José Ribeiro Gregório   +2 more
doaj   +1 more source