<b>Synthesis of 7-dehydrocholesterol through hexacarbonyl molybdenum catalyzed elimination reaction</b>
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چکیده
منابع مشابه
An investigation of the chemistry of molybdenum hexacarbonyl on thin dehydroxylated alumina films in ultrahigh vacuum
The adsorption of molybdenum hexacarbonyl on thin dehydroxylated alumina films grown on an Mo(100) single-crystal substrate is studied in ultrahigh vacuum using primarily temperature-programmed desorption and reflection-absorption infrared spectroscopy. Subcarbonyls are detected using infrared spectroscopy at low temperatures and desorb at 245K. A portion of the subcarbonyls decomposes to form ...
متن کاملSynthesis and molecular structure of (g-pentamethyl-cyclopentadienyl) (g-cyclopentadienyl) hexacarbonyl molybdenum tungsten
The metathesis reaction of Cp*(CO)3MoBr and NaW(CO)3Cp produced Cp*(CO)3Mo–W(CO)3Cp (1), featuring an unsupported Mo–W bond. Exposure of solutions of 1 to light leads to the quantitative formation of the corresponding homometallic dimers. In the solid state, the title complex exhibits an anti-arrangement of the g-cyclopentadienyl and the g-pentamethylcyclopentadienyl ligands and six terminal ca...
متن کاملInteraction of molybdenum hexacarbonyl with metallic aluminum at high temperatures: Carbide and alloy formation
The reaction of Mo(CO)6 on aluminum films grown on a Mo(1 0 0) substrate at 700 K is explored in ultrahigh vacuum using temperatureprogrammed desorption (TPD) and Auger and X-ray photoelectron (XPS) spectroscopies. Reaction with Mo(CO)6 at 700 K results in some oxidation of the outer layer of the aluminum film, and the formation of a molybdenum carbide, which incorporates some oxygen. The carbi...
متن کاملMechanistic studies of the molybdenum-catalyzed asymmetric alkylation reaction.
Enantiomerically enriched, deuterated branched carbonates (Z)-(S)-PhCH(OCO(2)Me)-CH = CHD (1-D), (Z)-(R)-PhCH(OCO(2)Me)CH = CHD (2-D), and linear carbonate (E)-(S)-PhCH = CHCHD(OCO(2)Me) (3-D) were used as probes in the Mo-catalyzed asymmetric allylic alkylation with sodium dimethyl malonate, catalyzed by ligand-complex 11 derived from the mixed benzamide/picolinamide of (S,S)-transdiaminocyclo...
متن کاملMolybdenum Reduction to Molybdenum Blue in Serratia sp. Strain DRY5 Is Catalyzed by a Novel Molybdenum-Reducing Enzyme
The first purification of the Mo-reducing enzyme from Serratia sp. strain DRY5 that is responsible for molybdenum reduction to molybdenum blue in the bacterium is reported. The monomeric enzyme has an apparent molecular weight of 105 kDalton. The isoelectric point of this enzyme was 7.55. The enzyme has an optimum pH of 6.0 and maximum activity between 25 and 35°C. The Mo-reducing enzyme was ex...
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Ethiopia
سال: 2011
ISSN: 1011-3924
DOI: 10.4314/bcse.v25i2.65899