Sulfated tungstate: An alternative, eco-friendly catalyst for Biginelli reaction

Sulfated tungstate catalyzed simple, one pot, solvent free and environmentally benign process for synthesis of dihydropyrimidinones via Biginelli reaction is described. It was found that the catalyst is reusable and exhibited remarkable activity.

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► Sulfated tungstate is an easy to prepare solid.
► It is stable, reusable, ecofriendly, mildly acidic catalyst.
► It catalyses efficiently Biginelli reaction under solvent free conditions.