Anil‐Synthese 18. Mitteilung. Über die Herstellung von Styryl‐Derivaten des 3‐Phenyl‐benzisoxazols

Preparation of styryl derivatives of 3‐phenyl‐benzisoxazole 3‐(p‐Tolyl)‐1,2‐or 2, 1‐benzisoxazoles and 6‐methyl‐3‐phenyl‐1,2‐benzisoxazoles react with anils of aromatic aldehydes in the presence of dimethylformamide and potassium hydroxide or potassium t‐butoxide to yield the corresponding 3‐(stilben‐4‐yl)‐1,2‐ or 2,1‐benzisoxazoles and the 3‐phenyl‐6‐styryl‐1,2‐benzisoxazoles respectively (‘Anil Synthesis’). Further, the Schiff's bases derived form chloroanilines and 3‐(p‐formylphenyl)‐1,2‐benzisoxazoles yield, with methyl‐and p‐tolyl substituted heterocyles the corresponding heterocyclic substitued styryl and stilbenyl derivatives.