反应详情

A mixture of 10 g. of crude 6-chloro-2-(3-chloropropyl)-2,3-dihydro-3-hydroxy-4H-1,3-benzoxazin-4-one prepared in the manner hereinbefore described and 50 ml. of 15 percent aqueous solution of ammonium hydroxide was stirred for 5 hours at room temperature and then filtered and washed with water. The crude product (6 g.) was recrystallized from 45 ml. of ethanol yielding 3.8 g., m-p. 148°-149° C.

1. additionA mixture of 10 g
2. filtrationfiltered
3. washwashed with water
4. customThe crude product (6 g.) was recrystallized from 45 ml
5. custom148°-149° C.