A novel approach for the one-pot synthesis of linear and angular fused quinazolinones
摘要:
A convenient and inexpensive one step methodology has been developed for the synthesis of linear and angular fused quinazolinones. The protocol, which uses amino heterocycles and o-bromo benzyl/naphthyl bromides as reactants, Cut as catalyst, Cs2CO3 as base, L-proline as ligand, and DMF as solvent, proceeds via nucleophilic aromatic substitution of the N-heteroaromatic cationic intermediate followed by in situ aerial oxidation at the benzylic position to the quinazolinone scaffold. (C) 2011 Elsevier Ltd. All rights reserved.