G. Tóth, Á. Szöllősy, C. Szántay
1983
Citations
0
Influential Citations
5
Citations
Journal
Journal of The Chemical Society-perkin Transactions 1
Abstract
It has been established (1H and 13C n.m.r.) that for 9-formyltetrahydro-4H-pyrido[1,2-a]pyrimidin-4-ones the tautomeric system imine ⇌ enamine ⇌ enol-imine [(A)⇌(B)⇌(C)] is dominated by form (B) which is stabilized by internal hydrogen bonds. The presence of ca. 15% of (C) in the equilibrium was shown by 15N n.m.r. While no (A) could be detected.