ONE-POT THREE-COMPONENT TANDEM ANNULATION OF 4-HYDROXYCOUMARINE WITH ALDEHYDE AND AROMATIC AMINES USING GRAPHENE OXIDE AS AN EFFICIENT CATALYST

One-pot three-component tandem annulation of 4-hydroxycoumarine with aldehyde and aromatic amines using graphene oxide as an efficient catalyst

Abstract A convenient and efficient solvent-free, facile, one-pot three-component graphene oxide catalysed approach has been described for the synthesis of chromeno-[4,3-b]quinolin-6-one derivatives from 4-hydroxycoumarin with Lithium Grease aldehydes and aromatic amines.Graphene oxide (GO) has proved to be a new class of heterogeneous carbocatalys

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Antimicrobial Resistance in Enterococci

Background.Enterococcus spp.are opportunistic agents of community-acquired and in-hospital infections, which have been considered a threat to public health due to their antimicrobial resistance, primarily to glycopeptides, in recent years.The aim of the study is to determine the prevalence of various Enterococcus species causing NiMH Rechargeable B

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