反应详情

To 4-(tert-butyl)-N-[3-(2-hydroxyethoxy)-1-methyl-4-(4-methylphenyl)-1H-pyrazol-5-yl]benzenesulfonamide (Example 2) (250 mg) in tetrahydrofuran (20 ml) at room temperature under an atmosphere of nitrogen was added sodium hydride (60% dispersion in oil, 47 mg) and the mixture was stirred for 5 minutes. To the mixture was added a solution of 5-methoxy-2-methylsulphonylpyrimidine (Aktual. Probl. Razvit. Nauchn. Issled. Molodykh Uch. Spets. Vil'nyus. Gosuniv. im. V. Kapsukasa, Mater. Konf. Molodykh Uch. Spets. Estestv. Khim. Fak. (1980), 87-90. Editor(s): Grigonis, I. Publisher: Vil'nyus. Gos. Univ. im. V. Kapsukasa, Vilnius, USSR.) (160 mg) in dimethylacetamide (2 ml) and the reaction was stirred for a further 16 hrs. The reaction was diluted with water (100 ml) and extracted with ethyl acetate (100 ml). The organic fraction was dried over magnesium sulfate, filtered and concentrated under reduced pressure. The residue was purified by column chromatography on silica (10 g) eluted with dichloromethane: ether:hexane (10:2.5:1) to yield the title compound as a white solid (190 mg).

1. stirringthe reaction was stirred for a further 16 hrs
2. extractionextracted with ethyl acetate (100 ml)
3. dry with materialThe organic fraction was dried over magnesium sulfate
4. filtrationfiltered
5. concentrationconcentrated under reduced pressure
6. customThe residue was purified by column chromatography on silica (10 g)
7. washeluted with dichloromethane: ether:hexane (10:2.5:1)