Sulfamic acid grafted to cross-linked chitosan by dendritic units: a bio-based, highly efficient and heterogeneous organocatalyst for green synthesis of 2,3-dihydroquinazoline derivatives
Ehsan Valiey, Mohammad G. Dekamin, Shirin Bondarian
Abstract
Novel chitosan cross-linked by a G1 dendrimer terminated by sulfamic acid groups (CS-TDI-Me-TDI-NHSO 3 H) was prepared. The catalytic activity of the multifunctional CS-TDI-Me-TDI-NHSO 3 H solid acid was demonstrated for the preparation of 2,3-dihydroquinazoline derivatives under green conditions.
Topics & Concepts
ChemistrySulfamic acidCatalysisThermogravimetric analysisThermogravimetryChitosanFourier transform infrared spectroscopyMelamineOrganic chemistryDendrimerNuclear chemistryChemical engineeringInorganic chemistryEngineeringMulticomponent Synthesis of HeterocyclesQuinazolinone synthesis and applicationsMicrowave-Assisted Synthesis and Applications