Sulfated tungstate: An efficient catalyst for synthesis of thioamides via Kindler reaction

New application of sulfated tungstate, a mildly acidic solid inorganic acid, as reusable heterogeneous catalyst for efficient Kindler reaction, a three component reactions of aldehydes, amines and sulfur, for synthesis of thioamides is discussed.

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► Sulfated tungstate is mildly acidic, stable, eco-friendly heterogeneous catalyst.
► The catalyst is easy to prepare and well characterized.
► Efficient for synthesis of thioamides via Kindler reaction.
► Protocol is suitable for synthesis of primary, secondary and tertiary thioamides.
► The catalyst can be easily recovered and recycled several times.