反应详情

温度

20 °C

The procedure is as in Example 15, starting with 2-amino-6-trifluoromethoxybenzothiazole (9.4 g) and 2-bromoethanol (10 g) in absolute ethanol (30 cc). The mixture is heated for 95 hours to boiling and then cooled to a temperature in the region of 20° C. The precipitate formed is filtered off and washed with ethyl ether (100 cc). 2-(2-Imino-6-trifluoromethoxy-3-benzothiazolinyl)ethanol hydrobromide (6.4 g), m.p. 219° C., is obtained.

1. temperatureThe mixture is heated for 95 hours
2. customThe precipitate formed
3. filtrationis filtered off
4. washwashed with ethyl ether (100 cc)