Krow, Grant published the artcileReinvestigation of 1,2-dihydropyridine formation by condensation of aldehydes with aniline. Revision of a structural assignment, Formula: C18H25N, the publication is Tetrahedron Letters (1971), 3653-6, database is CAplus.
The product of the HOAc catalyzed condensation of 3:1 PrCHO-PhNH2 was established by uv and NMR spectra as I. The reaction of I with maleic anhydride gave II, via a concerted π2s+π4s addition The structure and stereochemistry of II was determined by its NMR spectrum in the presence of Eu(DPM)3. In this abstract DPM=(tert-BuCO)2C-H.
Tetrahedron Letters published new progress about 34562-31-7. 34562-31-7 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is 3,5-Diethyl-1-phenyl-2-propyl-1,2-dihydropyridine, and the molecular formula is C18H25N, Formula: C18H25N.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem