potassium hydroxide in water; acetonitrile T=20°C; 24 h; Inert atmosphere;

1: With tetramethylene sulfide; styrene; N,N,N',N'-tetra-methylnaphthalene-1,8-diamine in dichloromethane T=20°C; Corey-Chaykovsky reaction; Inert atmosphere; 2: With 1-tert-butyl-2,2,4,4,4-pentakis(dimethylamino)-25,45-catenodi(phosphazene) in tetrahydrofuran; dichloromethane T=20°C; Corey-Chaykovsky reaction; Inert atmosphere;

in dimethyl sulfoxide T=20°C; Addition; 12.5 h;