Department of Chemistry, University of North Bengal, Dist-Darjeeling, West Bengal, India.
Sci Rep. 2021 Oct 6;11(1):19891. doi: 10.1038/s41598-021-99360-3.
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 aldehydes and aromatic amines. Graphene oxide (GO) has proved to be a new class of heterogeneous carbocatalyst which could be easily recovered and reused up to 5th run without significant loss of its catalytic activity. A broad scope of substrate applicability is offered and a plausible mechanism is also suggested for this developed protocol.
一种方便高效的无溶剂、简易、一锅法三组分氧化石墨烯催化方法已被描述,用于从 4-羟基香豆素、醛和芳香胺合成色烯并[4,3-b]喹啉-6-酮衍生物。氧化石墨烯(GO)已被证明是一类新型的多相碳催化剂,可在不显著损失其催化活性的情况下,在第 5 次回收和重复使用。该方法提供了广泛的底物适用性,同时也提出了一个合理的反应机理。