N-doped graphene quantum dots modified with CuO (0D)/ZnO (1D) heterojunctions as a new nanocatalyst for the environmentally friendly one-pot synthesis of monospiro derivatives
作者:Javad Safaei-Ghomi、Zahra Elyasi、Pouria Babaei
DOI:10.1039/d0nj04447d
日期:——
N-doped graphene quantum dots modified with CuO/ZnO nanoarrays were synthesized via a green hydrothermal process. The catalytic activities of the CuO/ZnO heterojunctions, pure N-GQDs, and CuO/ZnO@N-GQDs nanocomposite were compared and, based on the empirical results, it can be concluded that the activities are in the order: CuO/ZnO@N-GQDs > N-GQDs > CuO/ZnO. Therefore, the proposed nanocomposite was
A one-pot, three-component reaction of an isatin and kojic acid with an active methylene compound such as
ethyl cyanoacetate, methyl cyanoacetate and malononitrile in methanol using catalytic amount of DABCO to give 2'-
amino-6'-(hydroxymethyl)-8'H-spiro[indoline-3,4'-pyrano[3,2-b]pyran]-2,8'-diones in good to excellent yields under
reflux conditions, is described.