potassium hydroxide in 1,4-dioxane; water T=190 - 200°C; Addition; P=11400 Torr; 1 h;

1: 8,8'-bisquinolinyl disulfide With potassium hydroxide; hydrazine hydrate T=90°C; 2: 1,2-dichloro-ethane T=50°C; 2 h;