scholarly journals Recoverable and recyclable water-soluble sulphonated salicylaldimine Rh(i) complexes for 1-octene hydroformylation in aqueous biphasic media

2015 ◽  
Vol 44 (3) ◽  
pp. 1240-1248 ◽  
Author(s):  
Leah C. Matsinha ◽  
Selwyn F. Mapolie ◽  
Gregory S. Smith
Keyword(s):  
General Formula ◽  
Water Soluble ◽  
Mononuclear Complexes ◽  
Aqueous Biphasic

A series of water-soluble Rh(i) mononuclear complexes of general formula: [Rh(sulphsal-X-R)(COD)] [sulphsal = sulphonated salicylaldimine, COD = cyclooctadiene; where R = H, Cl, CH3 and X = H, tBu] have been synthesized.

Rhodium catalyzed aqueous biphasic hydroformylation of naturally occurring allylbenzenes in the presence of water-soluble phosphorus ligands

2015 ◽  
Vol 490 ◽  
pp. 163-169 ◽  
Author(s):  
Pablo J. Baricelli ◽  
Mariandry Rodriguez ◽  
Luis G. Melean ◽  
Maria Modroño Alonso ◽  
Margarita Borusiak ◽  
...  
Keyword(s):  
Water Soluble ◽  
Phosphorus Ligands ◽  
Naturally Occurring ◽  
Soluble Phosphorus ◽  
Aqueous Biphasic

scholarly journals Aqueous-biphasic hydroformylation of 1-hexene catalyzed by the complex HCo(CO)[P(o-C6H4SO3Na)]3

2017 ◽  
Vol 61 (2) ◽  
Author(s):  
María Modroño-Alonso ◽  
William Castro ◽  
Francisco Lopez-Linares ◽  
Merlín Rosales ◽  
Pablo Jose Baricelli
Keyword(s):  
Cobalt Complex ◽  
Nitrogen Atmosphere ◽  
Water Soluble ◽  
Catalyst Precursor ◽  
Reaction Conditions ◽  
Moderate Reaction ◽  
H Nmr ◽  
Reductive Carbonylation ◽  
Aqueous Biphasic ◽  
C Nmr

The water soluble cobalt complex HCo(CO)[P(<em>o</em>-C<sub>6</sub>H<sub>4</sub>SO-<sub>3</sub>Na)]<sub>3</sub> was used as catalyst precursor for the biphasic aqueous hydroformylation of 1-hexene. The complex was synthesized by reductive carbonylation of CoCl<sub>2</sub>.6H<sub>2</sub>O in the presence of <em>o</em>-TPPTS ([P(<em>o</em>-C<sub>6</sub>H<sub>4</sub>SO<sub>3</sub>Na)]<sub>3</sub>) under nitrogen atmosphere and characterized by FTIR, <sup>1</sup>H NMR and <sup>31</sup>P {1H} NMR, <sup>13</sup>C NMR, DEPT – 135, COSY, HSQC, MS (ESI). The catalytic activity of the complex in the biphasic hydroformylation reaction of 1-hexene was evaluated under moderate reaction conditions. The pressure and temperature were varied from 4137 – 7584 kPa (600-1100 psi) of syngas and from 353 – 383 K (80 – 110 °C), respectively. The 1-hexene concentration was varied from 0.021-0,11M and the catalyst from 4x10<sup>-4</sup> - 1.1x10<sup>-3</sup> M. The best conversion at 363 K and 7584 kPa and 7.5 h was 62% with selectivity towards aldehydes (heptanal and 2-methyl-hexanal) of 66% to with l/b ratio of 2.6. The recycling of the catalytic precursor after four successive times, did not show any loss on the activity, having selectivity towards aldehyde up to 60%.

Manganese(II) bromo- and iodo-complexes with phosphoramidate and phosphonate ligands: synthesis, characterization and photoluminescence

2021 ◽  
Author(s):  
Marco Bortoluzzi ◽  
Jesus Castro ◽  
Andrea Di Vera ◽  
Alberto Palù ◽  
Valentina Ferraro
Keyword(s):  
General Formula ◽  
Mononuclear Complexes ◽  
Monodentate Ligands ◽  
Phosphonate Ligands

Tetrahedral Mn(II) bromo- and iodo-complexes with phosphoramidate and phosphonate ligands were synthesized and characterized. Mononuclear complexes with general formula [MnX2L2] were isolated by using the monodentate ligands O=P(OPh)2(NMe2) and O=P(OPh)2Ph....

scholarly journals Novel water soluble bis(μ‐chloro) bridged Cu(II) binuclear and mononuclear complexes: Synthesis, characterization and biological evaluation

2017 ◽  
Vol 32 (3) ◽  
pp. e4111 ◽  
Author(s):  
Thangavel Thirunavukkarasu ◽  
H. Puschmann ◽  
H.A. Sparkes ◽  
Karuppannan Natarajan ◽  
V.G. Gnanasoundari
Keyword(s):  
Biological Evaluation ◽  
Water Soluble ◽  
Mononuclear Complexes

ChemInform Abstract: Water-Soluble Calixarenes as New Inverse Phase-Transfer Catalysts. Their Scope in Aqueous Biphasic Alkylations and Mechanistic Implications.

ChemInform ◽  
2010 ◽  
Vol 33 (42) ◽  
pp. no-no
Author(s):  
Shoichi Shimizu ◽  
Takashi Suzuki ◽  
Seiji Shirakawa ◽  
Yasuyuki Sasaki ◽  
Choichiro Hirai
Keyword(s):  
Phase Transfer ◽  
Water Soluble ◽  
Phase Transfer Catalysts ◽  
Aqueous Biphasic

Nickel(0) and Palladium(0) Complexes with 1,3,5-Triaza-7-phosphaadamantane. Catalysis of Buta-1,3-diene Oligomerization or Telomerization in an AqueousBiphasic System

1997 ◽  
Vol 62 (2) ◽  
pp. 355-363 ◽  
Author(s):  
Jan Čermák ◽  
Magdalena Kvíčalová ◽  
Vratislav Blechta
Keyword(s):  
Metal Complexes ◽  
Nmr Spectra ◽  
High Selectivity ◽  
Palladium Complexes ◽  
Water Soluble ◽  
Biphasic System ◽  
Product Phase ◽  
Aqueous Biphasic System ◽  
Soluble Ligand ◽  
Aqueous Biphasic

New homoleptic nickel(0) and palladium(0) complexes with a water-soluble ligand, 1,3,5-triaza-7-phosphaadamantane, were prepared and characterized by 1H, 13C, and 31P NMR spectra. The complexes, together with the known analogous Ni(0) and Pd(0) complexes with tris(hydroxymethyl)phosphine, were found to be catalysts for buta-1,3-diene oligomerization or telomerization with water in an aqueous biphasic system without a cosolvent or a modifier. Tetrakis[tris(hydroxymethyl)phosphine]nickel (7) preferentially catalyzes oligomerization (both linear and cyclic) in the first example of a nickel-catalyzed buta-1,3-diene oligomerization in an aqueous biphasic system. Palladium complexes give telomers or linear oligomers in quantitative yields. In the case of the triazaphosphaadamantane complex 4, high selectivity to octadienyl ethers (87%) was observed. High values of metal leaching into the product phase in these reactions suggest an easy extraction of starting or intermediate metal complexes caused by the fact that both monomer and products are good ligands for the metal complexes in this particular case.

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