1.1: lauryl mercaptan / ethyl acetate / Inert atmosphere; Reflux 1.2: 0.58 h / Inert atmosphere; Reflux 1.3: 0.08 h / Reflux 2.1: potassium carbonate / 2-methyl tetrahydrofuran / Reflux 3.1: methyltretrahydrofuran, 2- / 75 °C 4.1: hydrogenchloride / water; tetrahydrofuran / 0.25 h / 65 °C View Scheme

1.1: lauryl mercaptan / ethyl acetate / Inert atmosphere; Reflux 1.2: 0.58 h / Inert atmosphere; Reflux 1.3: 0.08 h / Reflux 2.1: potassium carbonate / 2-methyl tetrahydrofuran / Reflux 3.1: methyltretrahydrofuran, 2- / 75 °C 4.1: hydrogenchloride / water; tetrahydrofuran / 0.25 h / 65 °C 5.1: sodium hydrogensulfite; water; hydrogen bromide; acetic acid / 2 h / Reflux 6.1: sodium carbonate / o-xylene; water / 70 - 80 °C 6.2: Reflux 6.3: 15 - 55 °C 7.1: ammonia / cyclohexane; water / Reflux View Scheme

1.1: lauryl mercaptan / ethyl acetate / Inert atmosphere; Reflux 1.2: 0.58 h / Inert atmosphere; Reflux 1.3: 0.08 h / Reflux 2.1: potassium carbonate / 2-methyl tetrahydrofuran / Reflux 3.1: methyltretrahydrofuran, 2- / 75 °C 4.1: hydrogenchloride / water; tetrahydrofuran / 0.25 h / 65 °C 5.1: sodium hydrogensulfite; water; hydrogen bromide; acetic acid / 2 h / Reflux 6.1: sodium carbonate / o-xylene; water / 70 - 80 °C 6.2: Reflux 6.3: 15 - 55 °C View Scheme

1.1: lauryl mercaptan / ethyl acetate / Inert atmosphere; Reflux 1.2: 0.58 h / Inert atmosphere; Reflux 1.3: 0.08 h / Reflux 2.1: potassium carbonate / 2-methyl tetrahydrofuran / Reflux View Scheme

1: With lauryl mercaptan in ethyl acetate Inert atmosphereReflux; 2: With 2,2'-azo-bisisobutyronitrile in ethyl acetate 0.583333 h; Inert atmosphereReflux; 3: With hydrogenchloride in water; ethyl acetate 0.0833333 h; Reflux;

With  hydrogen; acetic acid; palladium on activated charcoal in  ethanol  Ambient temperature;