Melamine trisulfonic acid: A new, efficient and recyclable catalyst for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thiones in the absence of solvent

Article abstract of DOI:10.1016/j.cclet.2010.10.033

Melamine trisulfonic acid (MTSA) can be used as an efficient and recyclable catalyst for the promotion of the synthesis of 3,4-dihydropyrimidin-2(1H)-ones/ thiones (DHPMs) in the absence of solvent. All reactions were performed at 80 °C in good to high yi