Abstract
Synthesis of methoxy-substituted pyridinium-type ionic liquids from a nontoxic and easy method is described. Catalytic behaviors of synthesized ionic liquids were investigated with various concentrations for the Mannich reaction. We have observed that methoxy- and dimethoxy-substituted pyridinium bromides showed better catalytic behavior than other ionic liquids.
GRAPHICAL ABSTRACT
![](/cms/asset/3e97c3dc-9d28-417e-b8fd-feb9163c1821/lsyc_a_941503_o_uf0001.gif)
ACKNOWLEDGMENT
The authors thank R. Sundaram, assistant professor, PG & Research Department of Chemistry, Presidency College, Chennai, for cooperation and moral support.