Fig. 3. Substrate scope of monosubstituted alkenes.^a.

a Reaction conditions A: BCB 1 (0.2 mmol), alkene 2 (0.1 mmol), Na₂SO₄ (0.17 mmol), 80 °C in DMSO (0.1 mL) under argon, 24 h, isolated yield. b 100 °C. c neat without any solvent, BCB 1 (0.1 mmol), alkene 2 (0.5 mmol), Na₂SO₄ (0.17 mmol). d Reaction conditions B:BCB 1 (0.1 mmol), alkene 2 (0.4 mmol), Na₂SO₄ (0.17 mmol), 80 °C in DMSO (0.1 mL). e MgSO₄ instead of Na₂SO₄. f 40 °C.