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Suitable multicomponent organic synthesis using heteropolycompounds as catalysts
(Bentham Science Publishers, 2015-04)
Nowadays, scientists need to work with non-contaminating technologies. Some approaches include the use of multicomponent reactions (MCRs), and solid and reusable catalysts. Through MCRs it is possible to work without ...
Heteropolycompounds as catalysts for biomass product transformations
(Taylor, 2016-10)
In this article we show a variety of biomass product transformations through catalysis by both bulk and supported heteropolycompounds. The biomass sources considered include carbohydrates, oils and fats, and terpenes as ...
Ecofriendly ketalization of isatin using heteropolycompounds as catalysts
(2008)
The dioxolane ketals of isatin and 5-chloroisatin were prepared using an efficient and cleaner procedure than the usual synthetic routes. Keggin heteropolyacids, namely, heteropolyphosphotungstic acid (HPW),
HPW/SiO2 and ...
Vanadium-substituted Keggin heteropolycompounds as catalysts for ecofriendly liquid phase oxidation of 2,6-dimethylphenol to 2,6-dimethyl-1,4- benzoquinone
(Elsevier Science, 2004-08)
Molybdovanadophosphate heteropolycompounds, H4PMo 11VO40 and H9PMo6V6O 40 and the corresponding Cs salts, were synthesized. The influence of thermal treatment on their Keggin primary structures and their acidic properties ...
Catalytic activity of Keggin heteropolycompounds in the Pechmann reaction
(Elsevier Science, 2008-04)
Different heteropolycompounds were used as catalysts in the synthesis of coumarins from phenols and ethyl acetoacetate. The H3PMo12O40 and H3PW12O40 Keggin heteropolyacids were supported on different types of silica. On ...
Supported heteropolycompounds as ecofriendly catalysts for 2,6-dimethylphenol oxidation to 2,6-dimethyl-1,4-benzoquinone
(Elsevier Science, 2008-01)
Supported catalysts were prepared by in situ deposition of the cesium salt of H4PMo11VO40. Commercial silica was impregnated to incipient wetness with an aqueous solution of CsNO3. The dried and calcined solid was then ...
An efficient catalytic route for the preparation of silyl ethers using alumina-supported heteropolyoxometalates
(Elsevier Science, 2010-06)
In the present work the phenol trimethylsilylation with hexamethyldisilazane using molybdophosphovanadates supported on commercial alumina cylinders as catalysts was studied. These catalysts were prepared by incipient ...
Dodecatungstocobaltate supported over ZSM-5 zeolite as novel solid catalyst in selective sulfide oxidation
(Springer, 2016-08)
The catalytic behavior of a Keggin type potassium dodecatungstocobaltate (II) salt supported on ZSM-5 zeolite for wet peroxide oxidation of 2-(methylthio) benzothiazole, as a model organic sulfide, was thoroughly studied. ...