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One-Pot Conversion (one-pot + conversion)

Distribution by Scientific Domains
Chemistry100%

Selected Abstracts

Palladium-Catalyzed One-Pot Conversion of Aldehydes to Amides

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 2-3 2010
Md Ashif Ali
Abstract The palladium-catalyzed one-pot conversion of aldehydes into primary amides in the presence of hydroxylamine hydrochloride in aqueous dimethyl sulfoxide (DMSO) at moderate temperature is described. The process is selective and free from the addition of an external chelating ligand. [source]

One-Pot Conversion of Cephalosporin C to 7-Aminocephalosporanic Acid in the Absence of Hydrogen Peroxide

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 14 2005
Fernando Lopez-Gallego
Abstract The main drawback in the production of 7-aminocephalosporanic acid (7-ACA) at the industrial level is the inactivation of the enzymes implicated in the process due to the presence of hydrogen peroxide during the reaction. As an alternative, we have developed the conversion of cephalosporin C to 7-ACA in a single reactor without the presence of hydrogen peroxide during the reaction, achieving more than 80% yield. In order to develop this process, D -amino acid oxidase (DAAO) was co-immobilized with catalase (CAT), which is able to fully eliminate in situ the hydrogen peroxide formed by the neighbouring DAAO molecules. Thus, the product of the reaction is only ,-ketoadipyl-7-ACA. This system prevents the inactivation of the oxidase by hydrogen peroxide, solving the main problem of the enzymatic process. Moreover, we have found that ,-ketoadipyl-7-ACA is recognized as a substrate by glutaryl acylase (GAC) and hydrolyzed as long as glutaric acid is absent from the reaction medium (because it is able to inhibit the hydrolysis). The low stability of ,-ketoadipyl-7-ACA justifies the use of a single reactor, in which glutaryl acylase is already present when this substrate is generated. Thus, the whole process may (and must) be performed in a single step, and in the absence of hydrogen peroxide that could affect the stabilities of the involved enzymes. [source]

Arthrobacter Endo-,- N -Acetylglucosaminidase Shows Transglycosylation Activity on Complex-Type N -Glycan Oxazolines: One-Pot Conversion of Ribonuclease B to Sialylated Ribonuclease C

CHEMBIOCHEM, Issue 10 2010
Wei Huang Dr.
Transforming protein glycosylation: The Arthrobacter endo-,- N -acetylglucosaminidase (Endo-A) was found to transglycosylate complex N -glycan oxazolines without product hydrolysis. Given its high activity in hydrolyzing high-mannose-type N -glycans, the newly discovered property enables a one-pot switch of glycans in a glycoprotein, as shown by the conversion of heterogeneous RNase B to homogeneous sialylated RNase C. [source]

ChemInform Abstract: One-Pot Conversion of Aromatic Bromides and Aromatics into Aromatic Nitriles.

CHEMINFORM, Issue 43 2010
Sousuke Ushijima
Abstract Various bromoarenes and p-iodotoluene can be efficiently converted to nitriles through a one-pot sequence including lithiation, reaction with DMF and subsequent oxidation with iodine in the presence of ammonia. [source]

ChemInform Abstract: 2,4,6-Trichloro-1,3,5-triazine/dimethylformamide as an Efficient Reagent for One-Pot Conversion of Alcohols into N-Alkylphthalimides.

CHEMINFORM, Issue 26 2010
Babak Mokhtari
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Terpyridine Ruthenium-Catalyzed One-Pot Conversion of Aldehydes into Amides.

CHEMINFORM, Issue 25 2009
Dinakar Gnanamgari
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

Lithium Naphthalenide-Induced Reductive Selenenylation of ,-Cyano Ketones: A Regiocontrolled Process for ,-Phenylseleno Ketones and One-Pot Conversion into Enone System.

CHEMINFORM, Issue 38 2007
Jia-Liang Zhu
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

Palladium-Catalyzed Silane/Siloxane Reductions in the One-Pot Conversion of Nitro Compounds into Their Amines, Hydroxylamines, Amides, Sulfonamides, and Carbamates.

CHEMINFORM, Issue 5 2007
Ronald J. Jr Rahaim
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

Palladium-Catalyzed Silane/Siloxane Reductions in the One-Pot Conversion of Nitro Compounds into Their Amines, Hydroxylamines, Amides, Sulfonamides, and Carbamates.

CHEMINFORM, Issue 5 2007
Ronald J. Jr. Rahaim
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

Reductive Heterocyclizations via Indium/Iodine-Promoted One-Pot Conversion of 2-Nitroaryl Aldehydes, Ketones, and Imines.

CHEMINFORM, Issue 3 2007
Rongbi Han
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

Stannous Chloride in Alcohol: A One-Pot Conversion of 2-Nitro-N-arylbenzamides to 2,3-Dihydro-1H-quinazoline-4-ones.

CHEMINFORM, Issue 1 2006
Choong Leol Yoo
No abstract is available for this article. [source]

One-Pot Conversion of Aldoximes into Nitriles via Aldoxime Tosylates under Microwave Irradiation.

CHEMINFORM, Issue 51 2005
Hossein A. Oskooie
Abstract For Abstract see ChemInform Abstract in Full Text. [source]

A Novel One-Pot Conversion of Aldehydes to (E)-,-Fluoro-,-trifluoromethylallylic Alcohols.

CHEMINFORM, Issue 20 2003
Yanchang Shen
No abstract is available for this article. [source]

Ultrasound-Promoted "One-Pot" Conversion of Nitro Compounds to Carbamates.

CHEMINFORM, Issue 35 2002
S. Chandrasekhar
Abstract For Abstract see ChemInform Abstract in Full Text. [source]

ChemInform Abstract: Functionalization of Carboxylic Anhydrides at ,-Carbon with Hypervalent Iodine Reagents: One-Pot Conversion of Anhydrides to 2-Sulfonyloxycarboxylate Esters.

CHEMINFORM, Issue 5 2002
Jeffrey M. Goff
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: New Halogenation Reagent System for One-Pot Conversion of Alcohols into Iodides and Azides.

CHEMINFORM, Issue 35 2001
Ahmed Kamal
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: A New "One-Pot" Conversion of Trifluoroacetic Ester to ,-Fluoro-,-trifluoromethyl-,-alkoxy-vinylphosphonates.

CHEMINFORM, Issue 28 2001
Yanchang Shen
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

Selective Bifunctional Catalytic Conversion of Cellulose over Reshaped Ni Particles at the Tip of Carbon Nanofibers

CHEMSUSCHEM CHEMISTRY AND SUSTAINABILITY, ENERGY & MATERIALS, Issue 6 2010
Stijn Van, Vyver
Access to cellulose: Carbon nanofibers grown over Ni supported on ,-Al2O3 act as efficient catalysts for the one-pot conversion of cellulose to sugar alcohols, owing to the enhanced accessibility of the water-insoluble substrate towards the active catalytic sites. The new catalyst design concept yields unprecedented results for selective cellulose conversion using inexpensive Ni catalysts. [source]

Hydrogenolysis of 1,2-Propanediol for the Production of Biopropanols from Glycerol

CHEMSUSCHEM CHEMISTRY AND SUSTAINABILITY, ENERGY & MATERIALS, Issue 6 2010
Yasushi Amada
Abstract Production of propanols from glycerol, which are known as biopropanols, requires catalysts for the hydrogenolysis of 1,2-propanediol, which has been easily derived from glycerol. It is found that the Rh/SiO2 catalysts modified with ReOxspecies exhibited high activity and selectivity in the hydrogenolysis of 1,2-propanediol to propanols with low selectivity to degradation products and high stability. The optimized RhReOx/SiO2 (Re/Rh=0.5) catalyst gave high yields of 1-propanol (66,%) and propanols (1-propanol +2-propanol) (85,%) in the hydrogenolysis of 1,2-propanediol. In addition, the catalyst was applicable to the one-pot conversion of glycerol to propanols. The structure of Rh metal particles with attached ReOxclusters is suggested from the catalyst characterization. It is proposed that 1,2-propanediol hydrogenolysis proceeds by the hydrogenolysis of the alkoxide species on Re with hydrogen species on the Rh metal surface. [source]