Lv. Baikalova et al., SYNTHESIS AND STRUCTURE OF AZOMETHINES BASED ON N-VINYL DERIVATIVES OF 2-AMINOIMIDAZOLE AND 2-FORMYLIMIDAZOLES, Russian chemical bulletin, 46(10), 1997, pp. 1763-1765
New Schiff's bases of the N-vinylimidazole and N-vinylbenzimidazole se
ries were synthesized. H-1 NMR data suggest that the azomethines exist
in the E-form with respect to the CH=N bond and that the vinyl groups
have trans-orientation relative to each other.