potassium fluoride; 18-crown-6 ether in acetonitrile T=60°C; 3.4 h; Yield given. Yields of byproduct given;

1: 80 percent / sulfuryl chloride / CH2Cl2 / 2 h / Heating 2: 65 percent / magnesium, iodine, 1,2-dibromoethane / tetrahydrofuran / Ambient temperature View Scheme

potassium fluoride; 18-crown-6 ether in acetonitrile T=60°C; 3.4 h; Yield given. Yields of byproduct given;

1: 93 percent / sulfurylchloride / CH2Cl2 / 2 h / Ambient temperature 2: 82 percent / magnesium, iodine, 1,2-dibromoethane / tetrahydrofuran / Ambient temperature View Scheme