An efficient and clean method was developed for the one-potsynthesis of pyrimidinones by ytterbium chloridecatalyzed Biginelli-type reaction of aromatic aldehyde, cyclopentanone, and urea or thiourea undersolvent-freeconditions.
Microwave-assisted Brønsted acidic ionic liquid-promoted one-pot synthesis of heterobicyclic dihydropyrimidinones by a three-component coupling of cyclopentanone, aldehydes, and urea
作者:Matiur Rahman、Adinath Majee、Alakananda Hajra
DOI:10.1002/jhet.415
日期:——
A simple and efficient method has been developed for the synthesis of heterobicyclicdihydropyrimidinone derivatives through a solvent‐free one‐pot three‐component condensation of aromatic aldehydes, cyclopentanone, and urea or thiourea in the presence of Brønstedacidicionic liquid under microwave irradiation. The catalyst can be reused at least six times without any noticeable decrease in catalytic