Direct oxidative esterification of toluene with 1,3-dicarbonyl compounds catalysed by copper complex supported on magnetic nanoparticles
Toluene oxidation is one of the substantial industrial technologies since oxidized products are industrially very important intermediates. A Fe3O4@cysteine@Cu-catalysed reaction that uses tert-butyl hydroperoxide as oxidant to produce esters from toluene and β-diketones or β-keto esters, enolate precursors, has been developed. Oxidative esterification of toluene with 1,3-dicarbonyl derivatives led to C─O bond formation and direct C─H functionalization.
Azizi, Kobra,Esfandiary, Naghmeh,Karimi, Meghdad,Kazemi, Maryam,Heydari, Akbar
Nickel-catalyzed oxidative esterification of formamides with 1,3-dicarbonyl compounds under mild reaction conditions
Synthesis of enol carbamates was achieved via nickel-catalyzed oxidative coupling of formamides with 1,3-dicarbonyl compounds in the presence of tert-butyl hydroperoxide at 40?°C. Various derivatives of enol carbamates were synthesized by this method in good to excellent yields.
Saberi, Dariush,Poorsadeghi, Samira
(2017/09/30)
Oxidative esterification of methylarenes and 1,3-dicarbonyls catalysed by copper chloride immobilized on magnetic nanoparticles
Superparamagnetic CuCl nanoparticles were prepared and identified as an effective heterogeneous catalyst for the tandem transformation of methylarenes and 1,3-dicarbonyl compounds into the corresponding enole esters by the use of tert-butyl hydroperoxide as an external oxidant. The catalyst can be removed from the reaction medium simply by use of an external magnet. As a consequence, various derivatives of enol esters were synthesized in moderate to good yields.
Nakisa, Athar,Karimi, Meghdad,Yazdani, Elahe,Heydari, Akbar
(2017/07/25)
ACYLATION OF ACTIVE METHYLENE COMPOUNDS VIA PALLADIUM COMPLEX-CATALYZED CARBONYLATIVE CROSS-COUPLING OF ORGANIC HALIDES
New procedures for acylation of active methylene compounds via palladium complex-catalyzed carbonylation of organic halides are disclosed.
Kobayashi, Toshi-aki,Tanaka, Masato
p. 4745 - 4748
(2007/10/02)
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