Abstract
A novel class of tricoordinate dioxaborinane compounds, which have the general formula [B1(L1–5)] and [B2(L1–5)], were designed and synthesized by the corresponding catechol-type ligands (L1–L5) at ambient temperature. All the new compounds were fully characterized by NMR (1H, 13C, and 11B), FT-IR, UV–vis, LC-MS spectroscopy, and melting point analysis and microanalysis. The dioxaborinane [B1(L1–5)] and [B2(L1–5)] compounds were investigated as catalyst for the transfer hydrogenation of various ketones under suitable conditions. Particularly, it was proved that the ferrocene-based dioxaborinane [B1(L1–5)] molecules can afford an efficient catalytic conversion compared to corresponding 3,5-bis(trifluoromethyl)phenyl-based [B2(L1–5)] dioxaborinanes in transfer hydrogenation catalytic studies.
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•The new compounds were prepared and fully characterized.•The various spectroscopic methods were used for characterization.•The dioxaborinane catalysts was used for transfer hydrogenation of ketones.