Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 4-Methyl-1,8-naphthyridine, is researched, Molecular C9H8N2, CAS is 1569-17-1, about Spectral data of substituted naphthyridines. V. The IR spectra of substituted 1,8-naphthyridines.Computed Properties of C9H8N2.
In general the IR spectra of 1,8-naphthyridines show a ring bending (skeletal) vibration at 690-740-cm-1, three adjacent H absorption at 750-795 and 810-885 cm-1, two adjacent H absorptions at 785-855 cm-1 and isolated H absorptions at 795-810 and 885-920 cm-1.
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Reference:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem