反应详情

4.0 g of 3-fluoro-5chloro-2-pyridinecarbonyl chloride (Example H6) are added in portions to a stirred mixture of 26 ml of 30% aqueous ammonia solution and 4 ml of tetrahydrofuran. The yellowish suspension is subsequently stirred for 4 hours and filtered and the material on the filter is washed with water and n-hexane. After drying in vacuo at 40° C., 1.34 g of the desired compound are obtained as a white solid of melting point 162-164° C.

1. filtrationfiltered
2. washthe material on the filter is washed with water and n-hexane
3. customAfter drying in vacuo at 40° C.