Synthetic Route of 4971-56-6, Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics.In a document type is Article, and a compound is mentioned, 4971-56-6, Furan-2,4(3H,5H)-dione, introducing its new discovery.
A Novel One-Step Synthesis of 4H-Furo<3,4-b>pyrans and a Transformation into a Difuro<3,4-b:3',4'-e>pyridine
A simple one-step synthesis of 2-amino-4-aryl-5-oxo-4H-furo<3,4-b>pyran-3-carbonitriles 7 is described.It involves reaction of 2,4(3H,5H)-furandione (beta-tetronic acid) (5) with arylmethylenemalononitriles 4 in basic medium.Some substituent effects are noted and the assignments of 13C-NMR spectra are discussed.Ring transformation of the furo<3,4-b>pyran 7a leads to the difuro<3,4-b:3',4'-e>pyridine 9.Key Words: Furo<3,4-b>pyrans / Difuro<3,4-b:3',4'-e>pyridine / beta-Tetronic acid / Malononitriles, arylmethylene-
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Synthetic Route of 4971-56-6. In my other articles, you can also check out more blogs about 4971-56-6
Reference£º
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem