Synthesis of condensed derivatives of 2-substituted thieno[2,3-d]pyrimidin-4-ones

Article abstract of DOI:10.1007/BF02252109

A preparative method of synthesis of 2-substituted thieno[2,3-d]pyrimidin-4-ones involving deamination of the corresponding 3-amino derivatives by sodium nitrite in acidic medium is proposed. A possible reaction mechanism is considered. 1999 KluwerAcademic/Plenum Publishers.