A NEW SYNTHESIS OF QUINOXALINE, IMIDAZOLIDINE, INDOLE AND CARBAZOLE DERIVATIVES

Reactions of bis-benzalethylenediamine (1), N,N'-bis(aryl)- and N,N'-b is(cyclohexyl)ethane-1,2-diylidenediamines as well as ,N'-bis(aryl)ben zene-1,4-diyldimethylidenediamines 2 with benzo- and naphthoquinones a s well as alpha,beta-unsaturated ketones such as 2,3-dichloro-5,6-dicy ano-1,4-benzoquinone (DDQ); 2,3,5,6-tetrachloro-1,4-benzoquinone (CHl- p); 3,4,5,6-tetrachloro-1,2-benzoquinone (CHl-o); 2,3-dichloro-1,4-nap hthoquinone (DCNQ); 2,3-dicyano-1,4-naphthoquinone (DCNQ) and dicyanom ethyleneindane-1,3-dione (CNIND) afforded quinoxaline, pyrazinoquinoxa line, imidazolidine, indole and carbazole derivatives as well as aryla minobenzo-, and napthoquinones.