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: 5-Iodo-2-furaldehyde, is researched, Molecular C5H3IO2, CAS is 2689-65-8, about Proton-acceptor capacity of aromatic and heterocyclic carbonyl compounds at the hydrogen bond formation stage. II. 5-Substituted furfurals.Quality Control of 5-Iodo-2-furaldehyde.
The IR spectral shifts of the OH group of PhOH in the presence of I (R = H, Me, Me2N, Cl, Br, I) and II (R = H, Me, MeO, Cl, Br) were determined and correlated with substituent constants The furan ring displayed electron-donating character to a small extent. The doublet IR bands in the 3100-3600 cm-1 region arose form H bonding of PhOH with the carbonyl O and with the π system of I and II. Transmission coefficients of 0.4 and 0.5 were calculated for the 1,4-phenylene and 2,5-furandiyl groups.
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Reference:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem