We developed new recyclable catalyst based on bipyridine (bpy) functionalized polyisobutylene (PIB) oligomers for the direct synthesis of aryl boronates from the corresponding arenes through C-H activation borylation reaction. Iridium complexes generated from Ir (I) precursors and PIB oligomers functionalized with bpy ligands efficiently catalyzed the reactions of arenes with bis(pinacolato)diboron at room temperature to produce a variety of arylboronate compounds. This oligomer-supported Ir catalyst was successfully recovered through biphasic extraction and reused for up to eight cycles without significant loss of activity. Arylboronate products obtained after extraction are sufficiently pure as observed by <sup>1</sup>H and <sup>13</sup>C-NMR and do not require further purification.

Highly active, phase-separable and recyclable bipyridine linked polyisobutylene oligomers ligands based catalysts for iridium catalyzed C-H borylation reaction

254th National Meeting (2017)

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