Reference of 4-(Piperazin-1-yl)phenol. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 4-(Piperazin-1-yl)phenol, is researched, Molecular C10H14N2O, CAS is 56621-48-8, about Divergent Pathways for Reactions of 3-Formylchromone with Cyclic Secondary Amines in Alcoholic Media. Author is Korzhenko, Kirill S.; Osipov, Dmitry V.; Osyanin, Vitaly A.; Klimochkin, Yuri N..
Reaction of 3-formylchromone with cyclic secondary amines in methanol results in (E)-chromanones I [X = CH, R = Ph; X = O, R = none; X = N, R = 4-MeC6H4, 2,6-Me2C6H3, 2-MeOC6H4, etc.] and II, while use of ethanol leads to (E)-bis(morpholino)chromanone III or enaminoketones as dihydropyran ring-opening products. The solubility of the formed products in alc. media is postulated to be a key factor that determines the reaction pathway.
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