Abstract

A clean, simple, highly efficient and eco-friendly benign method for the synthesis of 1, 8-dioxooctahydroxanthene derivatives utilizing novel bronsted acidic ionic liquid; L-Pyrrolidine-2-carboxylic acid sulfate (LPCAS) as reagent been reported. Distinguishing features of the methodology are excellent yield of products in shorter reaction time, cleaner reaction profile, environmentally friendly nature and the use of inexpensive reagent

Key words: 1,8-dioxooctahydroxanthenes, L-pyrrolidine-2-carboxylic acid sulfate (LPCAS), eco-friendly, solvent free, ionic liqud