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SYNTHESIS OF 1,8-DIOXOOCTAHYDROXANTHENE AND 3,3- ARYLIDENE BIS(4-HYDROXYCOUMARIN) DERIVATIVES

SYNTHESIS OF 1,8-DIOXOOCTAHYDROXANTHENE AND 3,3- ARYLIDENE BIS(4-HYDROXYCOUMARIN) DERIVATIVES

Author: Mahesh R. Walle, Dattatraya N. Pansare, S. S. Kamble, Rajendra P. Pawar, Rajita D. Ingale
Abstract

A rapid, green and efficient method for the synthesis of 1,8-dioxooctahydroxanthene and 3,3-arylidenebis(4-hydroxycoumarin) derivatives through a one-pot condensation from various aromatic aldehydes is described using manganese ferrite (MnFe2O4) and cobalt ferrite (CoFe2O4) as promoting material under solvent-free conditions which can easily be recovered and reused. Compared with other synthetic methods, this new method has advantages such as milder reaction conditions, good to excellent yields, short reaction times, and environmentally benign procedure.

Keywords: Solvent-free reaction; 1,8-dioxooctahydroxanthene; 3,3-arylindene bis (4-hydroxycoumarin) derivatives ; reusable promoting material

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