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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