Collect. Czech. Chem. Commun. 1985, 50, 1870-1877

Synthesis of cyano derivatives with diazaquaterphenyl skeleton

Štefan Marchalín and Josef Kuthan

Department of Organic Chemistry, Prague Institute of Chemical Technology, 166 28 Prague 6


Cyclocondensation of 3-aryl-2-arylmethylene-3-oxopropanenitriles I with 4,4'-diacetylbiphenyl (II) in the presence of ammonium acetate gives para-substituted 4''-acetyl-3,5-diphenyl-2-aza-1:1',4':1''-terphenyls III and 4,4'''-dicyano-3,3''',5,5'''-tetraphenyl-2,2'''-diaza-1:1',4':1'',4'':1'''-quaterphenyls IV. Analogous reaction of the acetyl derivative IIIe with the oxonitriles Ie and Ia afforded the corresponding products IVe and V.