title: A new one-pot three-component condensation reaction for the synthesis of 5-deaza-5,8-dihydropterins.
abstract: The one-pot cyclocondensation of 2,6-diaminopyrimidin-4-one, an aromatic or aliphatic aldehyde and a beta-ketoester in acetic acid, or dimethyl sulfoxide in the presence of zinc(II) bromide, under thermal conditions provided dihydropyrido[2,3-d]pyrimidin-4(3H)-ones in good yield and with total regiocontrol.
authors.affiliation: Department of Chemistry, Cardiff University, PO Box 912, Cardiff, UK CF10 3TB. bagleymc@cf.ac.uk
authors.forename: M C
authors.initials: MC
authors.lastname: Bagley
authors.forename: N
authors.initials: N
authors.lastname: Singh