反应详情

To a solution of 69.5 parts of 2-methyl-2-thiopseudourea sulfate and 47 parts of methyl chloroformate in 1000 parts of water at 0°C is added dropwise 56.9 parts of potassium hydroxide in 200 parts of water. The reaction mixture is stirred at room temperature for 3 hours and then extracted with methylene chloride. The methylene chloride extract is dried and the solvent evaporated at reduced pressure to give 45 g of methyl N-(1-amino-1-methylthiomethylene)carbamate melting at 72°-77°C.

1. extractionextracted with methylene chloride
2. extractionThe methylene chloride extract
3. customis dried
4. customthe solvent evaporated at reduced pressure