An expedient microwave-assisted, solvent-free, solid-supported synthesis of pyrrolo[2,3-d]pyrimidine-pyrano[5,6-c]coumarin/[6,5-c]chromone derivatives by intramolecular hetero Diels-Alder reaction

A rapid synthesis of pyrrolo[2,3-d]pyrimidine annulated pyrano[5,6-c]coumarin/[6,5-c]chromone derivatives has been accomplished in good yields via an intramolecular domino hetero Diels-Alder reaction using microwave irradiation under solvent-free, solid-supported conditions. (c) 2008 Elsevier Ltd. All rights reserved.