15-(4-Carboxyphenyl)-10,15,20-triphenylporphyrin manganese(III) chloride grafted on magnetic polyglycidyl methacrylate as biomimetic catalyst and their catalytic activity

► Manganese porphyrin grafted on magnetic polyglycidyl methacrylate through amide bond as a novel material. ► Catalyst was suitable for efficient isolation with high recovery yield. ► An excellent conversion with high selectivity was observed. ► The catalytic activity remained when the catalysts were recycled seven times.