Alternatively, we realized that the diversification of deoxygenation means would potentially offer a conceptually distinct activation mode of carboxylic acids with vinyl boronic esters 2, 2' for reaction development to forge the important motif of β-keto-(gem-di)borylalkane 3, 4 (Figure ). These carbonyls bearing a boron functional group at the β position are important intermediates in chemical synthesis and they are core features of many natural products and pharmaceutically relevant agents.