Dowex-promoted general synthesis of N,N′-disubstituted-4-aryl-3,4-dihydropyrimidinones using a solvent-free Biginelli condensation protocol
摘要:
Dowex-50W ion exchange resin-promoted solvent-free heating of an intimate mixture of an aldehyde, an active methylene compound and N,N'-dimethylurea furnished the title compounds in moderate to good yields. (c) 2006 Elsevier Ltd. All rights reserved.