反应详情

A mixure of 507 mg of ethyl α-[2-chloro-4-(2,3,4,5-tetrahydro-5-methyl-3-oxo-1,2,4-triazin-6-yl)phenoxy]acetate (prepared as described in Example 5) and 407 mg of N-(2-aminoethyl)morpholine was stirred at 110°-115° C. (bath temperature) for 1 hour. The mixture was cooled and poured into water. The crystals which precipitated were collected by filtration. These crude crystals were recrystallized from a mixture of methanol and ethyl acetate to give 255 mg of the title compound as a white powder melting at 179°-181° C. (with decomposition). The filtrate was extracted with ethyl acetate, dried and concentrated by evaporation under reduced pressure, followed by trituration of the residue with ethyl acetate to give a further 91 mg of the title compound as crystals.

1. temperatureThe mixture was cooled
2. customThe crystals which precipitated
3. filtrationwere collected by filtration
4. customThese crude crystals were recrystallized from a mixture of methanol and ethyl acetate