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Alternatives to free molecular halogens as chemoselective reactants: Catalysis of organic reactions with reusable complexes of halogen metal salts
(Int Union Pure Applied Chemistry, 2012-02-06)
Organometallic complexes of halogen metallic salts have been used as catalysts in different organic reactions, mainly the oxidation of organic compounds. Their use has not only allowed the reduction of the amounts of ...
Chemoselective enzymatic preparation of N-hydroxyalkylacrylamides, monomers for hydrophilic polymer matrices
(Elsevier Science, 2006-05)
A lipase-catalyzed procedure is described for the preparation of N-hydroxyalkylacrylamides useful among a number of electrophoretical applications such as capillary and gel electrophoresis. The N-hydroxyalkylacrylamides ...
Preparation and characterization of a supported system of Ni2P/Ni12P5 nanoparticles and their use as the active phase in chemoselective hydrogenation of acetophenone
(IOP Publishing, 2018-03-26)
Ni2P/Ni12P5 nanoparticles were obtained by thermal decomposition of nickel organometallic salt at low temperature. The use of different characterization techniques allowed us to determine that this process produced a mixture ...
The development of an environmentally benign sulfide oxidation procedure and its assessment by green chemistry metrics
(Royal Society of Chemistry, 2009-02)
Different Iron (III) species were used as catalysts in sulfoxidation reactions giving excellent yields and high chemoselectivity. Among the iron (III) species, the best one was a solid β-cyclodextrin-FeBr3 complex. ...
Novel access to epilupeol through chemoselective hydrogenation of lupenone using platinum-based organotin catalysts
(Elsevier Science Sa, 2018-10-26)
Catalytic hydrogenation of terpenes constitutes one of the most interesting reactions in the transformation of natural products. One of the key goals in this synthesis is the selective hydrogenation of the CO bond for ...
Phosphorus as a promoter of a nickel catalyst to obtain 1-phenylethanol from chemoselective hydrogenation of acetophenone
(Elsevier, 2019-06)
Two catalysts were prepared using monodisperse pre-synthetized nanoparticles of metallic nickel and nickel phosphides with the same average diameter. Both nanoparticles species were deposited on the same support: mesoporous ...
Allylic alcohol synthesis by gas-phase hydrogen transfer reduction of unsaturated ketones
(Elsevier Science, 2005-06)
The gas-phase hydrogen transfer reduction (HTR) of mesityl oxide (MO) with 2-propanol to selectively obtain allylic alcohols was studied on MgO. MO was converted directly to 4-methyl-3-penten-2ol (UOL1) or isomerised to ...
Transition metal-based bimetallic catalysts for the chemoselective hydrogenation of furfuraldehyde
(Sociedade Brasileira de Química, 2010-03-01)
In this work, the liquid-phase chemoselective hydrogenation of furfural was studied, employing Pt, Rh and Ni-based catalysts. Bimetallic systems, containing different amounts of tin, were obtained by means of controlled ...
The sulfoxidation reaction catalyzed by CoBr2 complexes, under the magnifying glass of green parameters
(Elsevier B.V., 2018-07)
Different cobalt (II) and nickel (II) species were used as catalysts in sulfoxidation reactions giving excellent yields and high chemoselectivity. Among the cobalt (II) species, both γ-cyclodextrin complexes synthesized ...
An efficient chemoenzymatic synthesis of the bactericide lapyrium chloride
(Wiley VCH Verlag, 2005-10)
An efficient route for large-scale preparation of lapyrium chloride, a broad-spectrum antimicrobial surfactant, was developed from chloroacetic acid in four steps, three of them enzymatic. Due to the chemoselective behavior ...