ethyl mercaptan sodium salt in N,N-dimethyl-formamide T=105 - 110°C; 16 h;

1.1: carbon disulfide / 0.5 h / Inert atmosphere; Cooling with ice 1.2: 19 h / 20 °C / Cooling with ice 2.1: ethyl mercaptan sodium salt / N,N-dimethyl-formamide / 16 h / 105 - 110 °C View Scheme

1.1: hydrazine / water; diethylene glycol / 120 - 190 °C 1.2: 6 h / 120 - 130 °C 2.1: carbon disulfide / 0.5 h / Inert atmosphere; Cooling with ice 2.2: 19 h / 20 °C / Cooling with ice 3.1: ethyl mercaptan sodium salt / N,N-dimethyl-formamide / 16 h / 105 - 110 °C View Scheme

1.1: potassium carbonate / acetone / 6 h / Reflux 2.1: hydrazine / water; diethylene glycol / 120 - 190 °C 2.2: 6 h / 120 - 130 °C 3.1: carbon disulfide / 0.5 h / Inert atmosphere; Cooling with ice 3.2: 19 h / 20 °C / Cooling with ice 4.1: ethyl mercaptan sodium salt / N,N-dimethyl-formamide / 16 h / 105 - 110 °C View Scheme

1: potassium carbonate / |Heating 2: hydrazine; potassium hydroxide / |Heating 3: tin(IV) chloride / carbon disulfide / 20 °C / |Cooling with ice 4: ethyl mercaptan sodium salt / N,N-dimethyl-formamide / 16 h / 105 - 110 °C View Scheme