Synthesis of an aromatic cyclic enadione, 2-benzylidence-cyclohexane 1,3-dione (a potenstial angiogenesis inhibitor), has been done using benzaldehide (50 mmole) and cyclohexane- 1,3-dione (50 mmole) as starting materials and NaOH 1.0 N as a catalyst. Odorless and white needie-shape powder has been achieved. The power was 252.7 mg (2.53%) and the purity of the powder was 88.81%. Its meiting po…