Design of multifaceted acidic 1,3-disulfoimidazolium chlorometallate ionic systems as heterogeneous catalysts for the preparation of β-amino carbonyl compounds

Add time:07/17/2019    Source:sciencedirect.com

A new series of 1,3-disulfoimidazolium transition metal chloride systems: [Dsim]2[ZnCl4], [Dsim][FeCl4] and [Dsim]2[NiCl4] were synthesized as Brönsted–Lewis acidic solid material and characterized via NMR, FT-IR, Raman, TGA, SEM, EDX, Powder XRD, UV–visible, ICP-OES and elemental analysis. Semiconductor properties of these materials were studied through electronic spectroscopy. The Brönsted acidity of these systems was determined from Hammett plot. All these three materials were successfully tested as reusable catalyst for the one pot three component Mannich-type syntheses of β-amino carbonyl compounds within considerable time frame.

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