An expedient synthesis of 6-amino-5-[(4-hydroxy-2-oxo-2H-chromen-3-yl)(aryl)methyl]-1,3-dimethyl-2,4,6(1H,3H)-pyrimidinedione derivatives using Fe3O4@TiO2 nanocomposite as an efficient, magnetically separable, and reusable catalyst
l-Proline Derived Secondary Aminothiourea Organocatalyst for Synthesis of Coumarin Derived Trisubstituted Methanes: Rate Enhancement by Bifunctional Catalyst over Cooperative Catalysis
作者:Grace Basumatary、Rahul Mohanta、Ghanashyam Bez
DOI:10.1007/s10562-019-02809-4
日期:2019.10
l-proline derived aminothioureas are being used as catalyst in asymmetric synthesis, their applications in multicomponent reactions are not yet reported in the literature. We report herein a l-proline derived secondary aminothiourea as a multifunctional catalyst in multicomponent reaction for synthesis of coumarin-based unsymmetrical trisubstituted methanes whose prototype has been found to be acetylcholinesterase
Three-Component Green Reaction of Arylaldehydes, 6-Amino-1,3- Dimethyluracil and Active Methylene Compounds Catalyzed by Zr(HSO4)4 Under Solvent-Free Conditions
A convenient one-pot, three-component reaction of aromatic aldehydes, 6-amino-1,3-dimethyluracil and active methylene compounds in the presence of Zr(HSO4)4 as a heterogeneous catalyst, under solvent-free conditions brings a very simple and highly efficient method for the preparation of pyrimido[4,5-b]quinolines, pyrimido[5',4':5,6]pyrido[2,3- d]pyrimidines, indeno[2',1':5,6]pyrido[2,3-d]pyrimidines
Diversity oriented synthesis of tri-substituted methane containing aminouracil and hydroxynaphthoquinone/hydroxycoumarin moiety using organocatalysed multicomponent reactions in aqueous medium
作者:Ruchi Bharti、Tasneem Parvin
DOI:10.1039/c5ra13093j
日期:——
One-pot multicomponent reaction of aldehyde, 1,3-dimethyl-6-aminouracil and 2-hydroxy-1,4-naphthoquinone/4-hydroxycoumarin using a bifunctional thiourea-based organocatalyst in aqueous medium has been reported.