Ee. Korshin et al., AMINOAMIDINES .8. SYNTHESIS OF BICYCLIC NITROGEN-CONTAINING AND PHOSPHORUS, NITROGEN-CONTAINING COMPOUNDS FROM 2-ARYLAMINOMETHYLIMIDAZOLINES, Russian chemical bulletin, 43(3), 1994, pp. 439-444
N-Aryl-substituted 5-oxo-tetrahydroimidazo[1,5-a]imidazoles, tetrahydr
oimidazo[1,2-c][1,3,2 lambda(3)]- and -[1,2-c][1,3,2 lambda(5)]diazaph
ospholes, as well as 6-ore- and 5,6-dioxohexahydroimidazo[1, 2-a]pyraz
ines were synthesized using 2-arylaminomethylimidazolines as 1,4-binuc
leophiles.