1: carbon disulfide With sodium hydroxide; tetra(n-butyl)ammonium hydrogensulfate in water; toluene T=20°C; 2: chloroform; acetone in water; toluene T=20 - 30°C; 0.5 h; 3: With hydrogenchloride in water

1: With Trimethyldecylammonium bromide in hexane; chloroform T=10°C; Inert atmosphere; 2: With sodium hydroxide in hexane; chloroform T=25°C; Inert atmosphere; 3: With hydrogenchloride; water in hexane; chloroform 0.5 h; Inert atmosphere;