Aounzou, Mohammed First Metal-Free Synthesis of Tetracyclic Pyrido and Pyrazino Thienopyrimidinone Molecules. [electronic resource] - Molecules (Basel, Switzerland) May 2018 Publication Type: Journal Article ISSN: 1420-3049 Standard No.: 10.3390/molecules23051159 doi Subjects--Topical Terms: Chemistry Techniques, SyntheticCyclizationMolecular StructurePyridines--chemistryPyrimidines--chemical synthesis