Scheme 2. Substrate scope with respect to chalcones and styrenes. Reactions were performed on a 0.2 mmol scale in 6.0 mL of 4 wt. % SDS solution in water and irradiated with 456 nm blue LED for 18 h. The reaction mixture was cooled with a fan, and the temperature was measured to be 23 °C. Isolated yields are given, isolated isomeric ratio was determined using GC-FID and is indicated by pie chart, values can be found in the SI.