反应详情

温度

78 °C

21 parts of cyanamide and 83 parts of ethyl thiobenzoate are successively introduced into a solution of 12.5 parts of sodium in 260 parts of ethanol, and the mixture is refluxed for one hour at 78° C. It is then left to stand for 12 hours, 40 parts of chloroacetonitrile are added, and the reaction mixture is refluxed for one hour at 78° C. The product is precipitated by means of 300 parts of water, and filtered off. 78 parts of 2-phenyl-4-amino-5-cyano-thiazole (78% of theory) of melting point 178°-179° C. are obtained.

1. waitIt is then left
2. temperaturethe reaction mixture is refluxed for one hour at 78° C
3. customThe product is precipitated by means of 300 parts of water
4. filtrationfiltered off