[1]Khutova,B.M.;Klyuchko,S.V.;Prikazchikova,L.P.;Cherkasov,V.M.[ChemistryofHeterocyclicCompounds,1982,p.522-525][KhimiyaGeterotsiklicheskikhSoedinenii,1982,vol.18,#5,p.687-690]