Polymer-supported bis (2-hydroxyanyl) acetylacetonato molybdenyl Schiff base catalyst as effective, selective and highly reusable catalyst in epoxidation of alkenes

Polymer-supported bis (2- hydroxylanyl) acetylacetone Schiff base ligand was prepared by reaction of bis (2- hydroxylanyl) acetylacetone with chloromethylated polystyrene in DMF. In the subsequent reaction of this polymer-supported Schiff base ligand with MoO2(acac)2 the polymer-supported bis (2- hydroxylanyl) acetylacetonato MoO2 Schiff base complex was prepared. This polymer-supported molybdenum Schiff base catalyst was highly active and selective in epoxidation of various alkenes in the presence of tert-buthyl hydroperoxide (TBHP) in CCl4. It can be recovered and reused for 8 times without any loss in its activity.

Functionalized polymerstyrene bis (2- hydroxylanyl) acetylacetone Schiff base ligand and polymer-supported bis (2- hydroxylanyl) acetylacetonato MoO2 Schiff base complex were prepared. The supported molybdenum based Schiff base catalyst was highly active, selective and reusable in epoxidation of various alkenes in the presence of tert-buthyl hydroperoxide (TBHP) in CCl4.Figure optionsDownload as PowerPoint slideHighlights
► Supported bis (2-hydroxylanyl) acetylacetone and its MoO2 complex were prepared.
► They characterized by NAA, CHN and FT-IR spectroscopy.
► Catalytic activity of supported complex was investigated in epoxidation reaction.
► It was highly active, selective and reusable catalyst.