Fig. 3: Scope of synthesis of vicinal borosilanes.

Reaction conditions: allyl boronate (0.2 mmol), silane (0.24 mmol), 4CzIPN (0.5 mol%), EtO₂CCH₂SH (5 mol%), DIPEA (5 mol%) in MTBE (0.1 M) under irradiation with 40 W 456 nm LED light at room temperature for 12 h under argon. Isolated yields. ^a1 mol% 4CzIPN, 10 mol% ⁱPr₃SiSH and 10 mol% DIPEA.