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   Articles with "synthesis dihydropyrano" as a keyword



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DABCO catalyzed rapid one-pot synthesis of 1,4-dihydropyrano [2,3-c] pyrazole derivatives in aqueous media

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recommendations! Published in 2017 at "Journal of Saudi Chemical Society"

DOI: 10.1016/j.jscs.2015.06.010

Abstract: Abstract A simple and efficient protocol is developed for the synthesis of dihydropyrano[2,3-c]pyrazole derivatives by a one pot, four component reaction of ethylacetoacetate, hydrazine hydrate, malanonitrile and various aldehydes in the presence of a catalytic… read more here.

Keywords: pyrazole derivatives; dihydropyrano pyrazole; synthesis dihydropyrano; one pot ... See more keywords
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Zwitterionic sulfamic acid functionalized nanoclay: A novel nanocatalyst for the synthesis of dihydropyrano[2,3-c]pyrazoles and spiro[indoline-3,4ยด-pyrano[2,3-c]pyrazole] derivatives

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recommendations! Published in 2017 at "Journal of The Taiwan Institute of Chemical Engineers"

DOI: 10.1016/j.jtice.2016.12.010

Abstract: Abstract Zwitterionic sulfamic acid functionalized nanoclay (MMT-ZSA) was prepared with montmorillonite K10 as template, 3- aminopropyltriethoxysilane as linker and chlorosulfonic acid as a SO 3 H source. The physical and chemical properties of zwitterionic nanoclay… read more here.

Keywords: acid functionalized; synthesis dihydropyrano; functionalized nanoclay; sulfamic acid ... See more keywords
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B(C6F5)3 catalyzed synthesis of dihydropyrano[3,2-b]chromenediones under solvent-free conditions

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recommendations! Published in 2019 at "Synthetic Communications"

DOI: 10.1080/00397911.2019.1585542

Abstract: Abstract A simple, efficient, solventless, and one step, B(C6F5)3 catalyzed, synthesis of dihydropyrano[3,2-b]chromenediones from dimedone, aldehyde and kojic acid is described. This protocol proceeds smoothly, accommodates aromatic as well as heteroaromatic aldehydes and gives dihydropyrano[3,2-b]chromenediones… read more here.

Keywords: dihydropyrano chromenediones; catalyzed synthesis; c6f5 catalyzed; synthesis dihydropyrano ... See more keywords