反应详情

5 ml. of pyridine and 0.3 ml. of benzoyl chloride are added to 0.5 g. of 10-cyano-3-imino-8,9-dimethoxy-3,4,5,6-tetrahydro-1,3-thiazolo[4,3-a]isoquinoline, and the mixture is refluxed for 0.5 hours. After cooling, the mixture is diluted with water. 0.6 g. of 1-cyano-3-benzoylimino-8,9-dimethoxy-3,4,5,6-tetrahydro-1,3-thiazolo[4,3-a]isoquinoline is obtained in crystalline state; m.p.: 274°-276° C. (after crystallization from a mixture of dimethylformamide and butanol).

1. temperatureAfter cooling