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Sulfonated Polyethylene Glycol (PEG-SO3H) as Eco-Friendly and Potent Water Soluble Solid Acid for Facile and Green Synthesis of 1,8-Dioxo-Octahydroxanthene and 1,8-Dioxo-Decahydroacridine Derivatives

Zirconium nitrate: a reusable water tolerant Lewis acid catalyst for the synthesis of N-substituted pyrroles in aqueous media

Ultrasound-promoted catalyst-free one-pot four component synthesis of 2H-indazolo[2,1-b]phthalazine-triones in neutral ionic liquid 1-butyl-3-methylimidazolium bromide

Preparation of 4,49-(arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5ol)s over 1,3-disulfonic acid imidazolium tetrachloroaluminate as a novel catalyst a a a a