Recommanded Product: 500-22-1. I found the field of Chemistry very interesting. Saw the article Catalyst-Free Synthesis of Chromane-Type N,O-Acetals via Intramolecular Addition of Phenols to Enamines published in 2020.0, Reprint Addresses Osyanin, VA (corresponding author), Samara State Tech Univ, Dept Organ Chem, Fac Chem Technol, 244 Molodogvardeyskaya St, Samara 443100, Russia.. The CAS is 500-22-1. Through research, I have a further understanding and discovery of 3-Pyridinecarboxaldehyde.
A new strategy to 2-aminochromanes through catalyst-free cascade reaction of 3-trifluoroacetyl-4H-chromenes and 4H-chromene-3-carbaldehydes with cyclic secondary amines is presented. The reaction proceeds through subsequent 1,4- and 1,2-additions of amine, bimolecular elimination of trifluoroacetamide or formamide, and 6-exotrig cyclization. The latter stage is a very rare example of addition of phenols to enamines. The obtained semicyclic N,O-acetals were applied as useful precursors for the synthesis of other chromanes.
Welcome to talk about 500-22-1, If you have any questions, you can contact Osyanin, VA; Osipov, DV; Melnikova, IV; Korzhenko, KS; Semenova, IA; Klimochkin, YN or send Email.. Recommanded Product: 500-22-1
Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem