78373-95-2Relevant academic research and scientific papers
CYCLIZATION REACTIONS OF KETENIMINES WITH SOME NITROGEN CONTAINING COMPOUNDS
Svetlik, Jan,Martvon, Augustin
, p. 428 - 435 (2007/10/02)
3,4-Disubstituted, 3,4,5-trisubstituted 4H-1,2,4-triazoles and 2,3-disubstituted 4(3H)-quinazolinones were prepared in one step by cyclization reactions of ketenimines with formohydrazide, acetohydrazide, benzohydrazide, carbodihydrazide, thiosemicarbazide or anthranilic acid in xylene or dimethylformamide.Reaction of diphenylketene-N-phenylimine with aminoacetaldehyde diethyl acetal gave an adduct at the C=C bond, which afforded 2-diphenylmethyl-1-phenylimidazole with dilute HCl. 13C-NMR spectra of triazoles Id, IIa and IIb are commented.
