1972 Volume 20 Issue 10 Pages 2102-2105
1, 1-Dialkylguanidine reacted with benzil in the presence of sodium ethoxide to give 2-dialkylamino-4-oxo-5, 5-diphenylimidazoline, from which N-acetyl compound was successfully obtained by heating with an great excess of acetic anhydride. The structures of these compounds were confirmed by mass spectra and infrared spectra.