Photogeneration\nof β‑Borylsilyl Radical\nvia Decarboxylation of <i>N</i>‑Hydroxyphthalimide\nEsters

<i>Gem</i>-borylsilylalkanes are versatile\nintermediates\nin organic synthesis, and the traditional synthesis methods have mainly\nfocused on metal reagents, the insertion reactions of diazo compounds,\nand hydrosilylation/hydroborylation reactions of unsaturated bonds.\nHerein, a novel, efficient <i>gem</i>-borylsilylalkanes\nsynthesis via a radical approach is reported. This method introduced\na β-<i>gem</i>-borylsilyl NHPI ester as the precursor\nof the β-borylsilyl radical that, coupling with radical acceptors\nunder photo conditions, and the corresponding <i>gem</i>-borylsilylalkanes bearing unsaturated bonds, facilitate subsequent\ntransformations.