Microwave assisted synthesis of 2,3-dihydro-4H-benzo[4,5]thiazolo[3,2-a]furo[2,3-d]pyrimidin-4-ones and 6,7-dihydro-5H-furo[2,3-d]thiazolo[3,2-a]pyrimidin-5-ones using Mn(OAc)<sub>3sub>
Compounds 2a and 2b were obtained in high yields under mild reaction conditions. Radical addition of 2a and 2b to various alkenes using Mn(OAc)3 was achieved. New classes of compounds (4a–i) were synthesized under microwave irradiation.