反应详情

3 M hydrochloric acid (9.2 ml, 27.8 mmol) was added dropwise to an ethanol (200 ml) suspension of 2-{4-amino-2-[(3-chloro-4-methoxy-5-methylpyridin-2-yl)methyl]-2,7-dihydro-6-thia-1,2,3,5-tetraazabenzo[cd]azulen-8-yl}-N-methylacetamide (5446.6 mg, 11.6 mmol) at 25° C., while the suspension was stirred. The resulting mixture was stirred for 3.5 hours. The obtained crystal was collected by filtration, was then washed with ethanol (50 ml), and was then dried under reduced pressure at 40° C. for 14 hours, so as to obtain the above title compound (5436.1 mg, 116. mmol). Yield: 99%.

1. stirringThe resulting mixture was stirred for 3.5 hours
2. filtrationThe obtained crystal was collected by filtration
3. washwas then washed with ethanol (50 ml)
4. customwas then dried under reduced pressure at 40° C. for 14 hours