منابع مشابه
Catalytic enantioselective hydrogenolysis of [Cr(CO)3(5,8-dibromonaphthalene)].
Highly enantiomerically enriched (h-arene)tricarbonylchromium(0) complexes whose chirality originates from the 1,2disubstitution pattern of the arene and the coordination of the metal to one enantiotopic face of the arene are powerful chirons in asymmetric synthesis. Robust, planar chiral arene complexes also increasingly find application as chiral ligands in asymmetric catalysis. Enantiomerica...
متن کاملEvaluating and optimizing pretreatment technique for catalytic hydrogenolysis conversion of corn stalk into polyol.
A combinative pretreatment technology of steam explosion (SE) and alkali was applied to enhance hydrogenolysis conversion of corn stalk into polyol with Ni-W2C or Fe-Mn-K catalyst. The results showed that treatments corn stalk with 0.4 MPa SE and alkali removed 84.16 wt% of hemicellulose and 71.83 wt% of lignin and thereby increased the cellulose content from 31.54 to 80.41 wt%. But the glucose...
متن کاملProcess development of short-chain polyols synthesis from corn stover by combination of enzymatic hydrolysis and catalytic hydrogenolysis
Currently short-chain polyols such as ethanediol, propanediol, and butanediol are produced either from the petroleum feedstock or from the starch-based food crop feedstock. In this study, a combinational process of enzymatic hydrolysis with catalytic hydrogenolysis for short-chain polyols production using corn stover as feedstock was developed. The enzymatic hydrolysis of the pretreated corn st...
متن کاملUnusual Formation of Carbamate Salts: an Experimental Proof for the Mechanism of the Removal of Carbobenzoxy Group by Catalytic Hydrogenolysis
Catalytic hydrogenolysis of Z-Gly-NH2 and Z-Ala-NH2 resulted in the corresponding free amides and carbamate salts. This observation is a further experimental proof that carbamic acid derivatives are intermediates of hydrogenolytic removal of carbobenzoxy group under neutral conditions. The ratio of the formation of the two compounds is dependent on the solvent, concentration and chemical struct...
متن کاملSelective, nickel-catalyzed hydrogenolysis of aryl ethers.
Selective hydrogenolysis of the aromatic carbon-oxygen (C-O) bonds in aryl ethers is an unsolved synthetic problem important for the generation of fuels and chemical feedstocks from biomass and for the liquefaction of coal. Currently, the hydrogenolysis of aromatic C-O bonds requires heterogeneous catalysts that operate at high temperature and pressure and lead to a mixture of products from com...
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ژورنال
عنوان ژورنال: Journal of Synthetic Organic Chemistry, Japan
سال: 1960
ISSN: 0037-9980,1883-6526
DOI: 10.5059/yukigoseikyokaishi.18.305