Ionic liquid promoted facile and green synthesis of 1,8-dioxo-octahydroxanthene derivatives under microwave irradiation
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چکیده
منابع مشابه
Facile Synthesis of Hydantoin Derivatives under Microwave Irradiation
In recent years, microwave irradiation using commercial domestic ovens for the optimization and acceleration of organic reactions has rapidly increased1−2.It has been reported that a variety of reactions such as Dielsalder , ene, Claisen reactions , Fischer cyclization, synthesis of heterocycles , hydrolysis of esters , hydrogenation, deprotection of benzyl ester, deacetylation of diacetates, o...
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Abstract-A novel and efficient method has been developed for the synthesis of pyrano[3,2-c]quinoline-2,5-dione derivatives by the convenient ultrasound-mediated condensation of 4-hydroxyquinolin-2-one with Meldrum’s acid and aldehydes in the presence of a catalytic amount of [HMIm]HSO4 as a green, efficient and reusable acidic ionic liquid medium. The stability of the ionic liquid during the re...
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2.2 Significance of decarboxylation 2.2.1 Role in biosynthetic pathways In the biochemical milieu, decarboxylation is a ubiquitous step for transformation of amino acids into various other secondary metabolites using specific enzymes termed decarboxylases [Liu and Zhang (2006)]. More importantly, nature has also employed decarboxylation as a central tool for linking metabolic pathways like glyc...
متن کاملthe green synthesis of pyrano[3,2-c]quinoline-2,5-dione derivatives catalyzed by acidic ionic liquid under ultrasound irradiation
abstract-a novel and efficient method has been developed for the synthesis of pyrano[3,2-c]quinoline-2,5-dione derivatives by the convenient ultrasound-mediated condensation of 4-hydroxyquinolin-2-one with meldrum’s acid and aldehydes in the presence of a catalytic amount of [hmim]hso4 as a green, efficient and reusable acidic ionic liquid medium. the stability of the ionic liquid during the re...
متن کاملAn efficient synthesis of pyridoxal oxime derivatives under microwave irradiation.
Quaternary salts of pyridoxal oxime have been synthesized by the quaternization of pyridoxal oxime with substituted phenacyl bromides using microwave heating. Microwave-assisted rapid synthesis was done both in solvent (acetone) and under solvent-free conditions. Good to excellent yields (58%-94%) were obtained in acetone in very short reaction times (3-5 min) as well as in the solvent-free pro...
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ژورنال
عنوان ژورنال: Journal of Saudi Chemical Society
سال: 2017
ISSN: 1319-6103
DOI: 10.1016/j.jscs.2013.12.003