反应详情

Ethanesulfonic acid (0.024 ml, 0.30 mmol) was added to a 2-propanol (2.4 ml) solution of the compound (183 mg, 0.30 mmol) obtained in Example 70 and the resulting mixture was dissolved by heating. After stirring at room temperature for 23 hours, the precipitate was collected by filtration to give 177 mg (82%) of the title compound as a solid.

1. dissolutionthe resulting mixture was dissolved
2. temperatureby heating
3. filtrationthe precipitate was collected by filtration