反应详情

With stirring, 1.6 g (93.8 mmol) of ammonia gas were, at 0° C., introduced into a mixture of 18 g (44.6 mmol) of 2-chloro-5-[3,6-dihydro-3-methyl-2,6-dioxo-4-trifluoromethyl-(2H)-pyrimidin-1-yl]-benzenesulfonylchloride in tetrahydrofuran (THF). Then, at 10° C., ethyl acetate was added and the mixture was acidified with 1N hydrochloric acid. The phases were separated and the aqueous phase was extracted, and the combined organic phases were then washed, dried and the solvent was removed. Customary purification methods gave 14.4 g (82.4% of theory) of the title compound (m.p.: 257-258° C.).

1. customwere, at 0° C.
2. customThe phases were separated
3. extractionthe aqueous phase was extracted
4. washthe combined organic phases were then washed
5. customdried
6. customthe solvent was removed
7. customCustomary purification methods