反应详情

3.34 g (20 moles) of N-benzyl-cysteamine and 3.3 g of 1,1-bis-methylthio-2-nitro-ethylene are refluxed in 50 ml of ethanol for one hour. The gas evolution terminates after boiling for 20 minutes. The mixture is cooled and the precipitated product is isolated by filtration. 4.52 g of 3-benzyl-2-nitromethylene-thiazolidine are obtained, melting at 136° to 138° C. Crystallization of the product from 140 ml of ethanol yields 4.08 g of a purified product, melting at 139° C.

1. temperatureThe mixture is cooled
2. customthe precipitated product is isolated by filtration