ketones (acyclic compoundsN,N-Diphenyl-p-methoxyphenylchloromethyleniminium chloride is found to be an effective condensation reagent of carboxylic acids and Grignard reagents under mild conditions to afford the corresponding ketones in high yields....
Disclosed herein is the development of a novel single-electron reduction of acyl azoliums for the formation of ketones from carboxylic acids. Facile construction of the acyl azolium in situ followed by a radical-radical coupling was made possible using merged NHC-photoredox catalysis. The utility of...
Therefore, the exploration of a practical and sustainable strategy for direct deoxygenative synthesis of ketones in aqueous solution from carboxylic acids is still very desirable but highly challenging. Although an indirect deoxygenation coupling of acids with a few simple styrenes has been reported ...
1a). When producing ketones from carboxylic acids and organohalides, the stoichiometric approach requires preparation of necessary intermediates such as amides or aldehydes and Grignard reagents13,14. If aldehydes are employed, reoxidation is necessary15. Catalytic strategies for production of ketones ...
Carboxylic acids, activated in situ with DMC, undergo Pd-catalyzed cross-coupling reaction with arylboronic acids to produce unsymmetrical aromatic ketones.doi:10.1002/chin.201331074Pathak, ArunendraRajput, Chatrasal S.Bora, Pushkar S.Sharma, Somesh...
Production of oxygen-containing organic compounds by the co-oxidation of cycloparaffins and aldehydes Carboxylic acids and either alcohols or ketones or both are prepared by contacting a liquid mixture containing a saturated or unsaturated aldehyde having two to four carbon atoms and a paraffin (includ...
Two recent reviews of peroxidation of organic compounds 1,2 cite the fact that α,β-unsaturated ketones are oxidized by peracids to enol esters. A priori , however, one might expect one or more of three possible products and their hydr... WENKERT, ERNEST,RUBIN, MORDECAI - 《Nature》 被...
REACTIONS OF DIAZONIUM SALTS AND OXIME——SYNTHESIS OF ARYLALDEHYDES KETONES, NITRILES, CARBOXYLIC ACIDS AND AMIDES This is a new and convenient method for preparing aromatic aldehydes and ketones from amines.doi:10.1002/anie.196604182王进贤Gansu科学通报(英文版)... 王进贤 - 《科学通报(英文版)》...
ChemInform Abstract: ONE-POT SYNTHESIS OF KETONES FROM CARBOXYLIC ACIDS AND GRIGNARD REAGENTS USING N,N-DIPHENYL-P-METHOXYPHENYLCHLOROMETHYLENIMINIUM CHLORIDE The method involves the photochemically promoted allylic substitution reaction of allylic alcohols or ethers with phosphorothioic acid ester (II) fo...
Carbene and photocatalyst-catalyzed decarboxylative radical coupling of carboxylic acids and acyl imidazoles to form ketones Article Open access 23 May 2022 Direct ketone synthesis from primary alcohols and alkenes enabled by a dual photo/cobalt catalysis Article Open access 09 August 2024 Upgrading...