Fig. 2: The scope of 2-vinylphenyl silanes and 2-allylphenyl silanes.

^aStandard conditions: 1a (0.60 mmol), 2a (0.50 mmol), cat. Fe-3 (0.025 mol), LiOtBu (0.075 mmol), toluene (1 mL). ^bStandard conditions: 4a (0.3 mmol), 2a (0.3 mmol), cat. Fe-4 (0.015 mmol), LiOtBu (0.045 mmol), toluene (0.6 mL). ^cStandard conditions: 4a (0.30 mmol), 2a (0.30 mmol), cat. Fe-5 (0.015 mmol), LiOtBu (0.045 mmol), toluene (0.6 mL). ^dIsolated yield in the parentheses. ^eYields were determined by ¹H NMR using TMSPh as an internal standard. A The scope of 2-vinylphenyl silanes; B The scope of 2-allylphenyl silanes.