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.
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.