Author/Authors :
Rezayati، Sobhan نويسنده Department of Chemistry, Payame Noor University, PO BOX 19395-4697, Tehran, Iran , , Hajinasiri، Rahimeh نويسنده Chemistry Department, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran , , Erfani، Zahra نويسنده Department of Chemistry, Payame Noor University, PO BOX 19395-4697, Tehran, Iran. , , Rezayati، Saman نويسنده Department of Chemistry, Payame Noor University, PO BOX 19395-4697, Tehran, Iran , , Afshari-sharifabad، Saeid نويسنده Chemistry Department, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran ,
Abstract :
An efficient and simple procedure for the synthesis of 1,8-dioxo-octahydroxanthenes from the aromatic aldehydes and 5,5-dimethylcyclohexane-1,3-dione (dimedone) in the presence of boric acid [BO3H3 or B(OH)3] as an inexpensive and reusable catalyst is described. The salient features of this methodology are: the elimination of corrosive liquid acids, high yields, simple methodology, short reaction times, easy work-up and green heterogeneous catalyst.
