Synthesis of 1,4-diketones by the coupling reaction of trimethylsilyl enol ethers with lead tetraacetate
作者:Robert M. Moriarty、Raju Penmasta、Indra Prakash
DOI:10.1016/s0040-4039(01)81011-x
日期:1987.1
Synthesis of 1,4-diketones in good yields was achieved by the coupling reaction of the trimethylsilyl enol ethers of acetophenone, thiophene or furan with lead tetraacetate in dry dichloromethane and tetrahydrofuran at −78°C.
[EN] CATALYTIC SYNTHESIS OF REDUCED FURAN DERIVATIVES<br/>[FR] SYNTHÈSE CATALYTIQUE DE DÉRIVÉS DE FURANE RÉDUITS
申请人:ARCHER DANIELS MIDLAND CO
公开号:WO2014175989A1
公开(公告)日:2014-10-30
The present invention relates to catalytic synthesis of furan derivatives from alkoxymethylfurfural ethers or acyloxymethylfurfural esters. More particularly, the invention pertains to furan derivatives obtained by use of a multifunctional catalyst system to carry out both hydrogenation of furan starting material and hydrolysis of the reduced furan derivative in a single reaction. The process allows recovering and recycling of alcohol or acid from the reaction product.
[EN] METHOD FOR THE PREPARATION OF 2,5-FURANDICARBOXYLIC ACID AND FOR THE PREPARATION OF THE DIALKYL ESTER OF 2,5-FURANDICARBOXYLIC ACID<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ACIDE 2,5-FURANE DICARBOXYLIQUE ET DE PRÉPARATION DE L'ESTER DIALKYLIQUE D'ACIDE 2,5-FURANE DICARBOXYLIQUE
申请人:FURANIX TECHNOLOGIES BV
公开号:WO2011043661A1
公开(公告)日:2011-04-14
The application describes a method for the preparation of 2,5-furan dicarboxylic acid comprising the step of contacting a feed comprising a compound selected from the group consisting of 5-hydroxymethylfurfural ("HMF"), an ester of 5-hydroxymethyl-furfural, 5- methylfurfural, 5-(chloromethyl)furfural, 5-methylfuroic acid, 5-(chloromethyl)furoic acid, 2,5- dimethylfuran and a mixture of two or more of these compounds with an oxidant in the presence of an oxidation catalyst at a temperature higher than 140 0C.
A sustainable byproduct catalyzed domino strategy: facile synthesis of α-formyloxy and acetoxy ketones via iodination/nucleophilic substitution/hydrolyzation/oxidation sequences
The sustainable byproduct catalyzed domino strategy has been performed for the facilesynthesis of alpha-formyloxy and acetoxy ketones via iodination/nucleophilic substitution/hydrolyzation/oxidation sequences from simple and readily available aromatic ketones/unsaturated methyl ketones.
Synthesis and properties of 1-methyl-2-phenyl-5-(2-furyl)- and 1-methyl-2-phenyl-5-(2-thienyl)imidazoles
作者:E. V. Vlasova、A. A. Aleksandrov、M. M. El’chaninov
DOI:10.1134/s1070427210060194
日期:2010.6
2-Phenyl-5-(2-furyl)- and 2-phenyl-5-(2-thienyl)imidazoles were synthesized by condensation of 2-furoylmethyl and 2-thenoylmethyl acetates with benzaldehyde under the conditions of Weidenhagen reaction. The products were converted to N-methyl derivatives in the KOH-acetone system. The electrophilic substitution reactions of the products (acylation, bromination, nitration, sulfonation, hydroxymethylation)