Facile and Simple Route to the Synthesis of Condensed Acridine Systems

Abstract

Condensation of cyclohexane‐1,3‐dione or dimedone with o‐nitrobenzaldehyde and ammonium acetate/acetic anhydride furnished the corresponding acridinedione/xanthene derivatives. The middle ring aromatization followed by reductive cyclization afforded the respective condensed acridine systems.

Keywords:

• Acridinedione
• reductive cyclization
• xanthene

Acknowledgment

The authors are grateful to National Science Council, Taiwan, ROC, Department of Science and Technology and UGC (Government of India, New Delhi, India) for financial support.