Graphene oxide nanosheets as metal-free catalysts in the three-component reactions based on aryl glyoxals to generate novel pyranocoumarins

Graphene oxide nanosheets as metal-free catalysts in the three-component reactions based on aryl glyoxals to generate novel pyranocoumarins

Graphene oxide (GO) was prepared and employed as a novel, recyclable and safe catalyst for the one-pot, three-component condensation of 4-hydroxycoumarin with aryl glyoxals and malononitrile to produce new pyranocoumarins. Catalyst loadings can be as low as 0.005 g to give high yields of the corresp...

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Veröffentlicht in:New journal of chemistry 2014, Vol.38 (8), p.3586-3590
Hauptverfasser: Khodabakhshi, Saeed, Karami, Bahador
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Karami, Bahador
description Graphene oxide (GO) was prepared and employed as a novel, recyclable and safe catalyst for the one-pot, three-component condensation of 4-hydroxycoumarin with aryl glyoxals and malononitrile to produce new pyranocoumarins. Catalyst loadings can be as low as 0.005 g to give high yields of the corresponding products. This novel method has many advantages, such as the high product yield and a simple work-up procedure.
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title Graphene oxide nanosheets as metal-free catalysts in the three-component reactions based on aryl glyoxals to generate novel pyranocoumarins
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