Water → 1-(4-cyanophenyl)-5-(3,6-dimethyl-2,4-dioxo-1-(3-trifluoromethylphenyl)-1,2,3,4-tetrahydropyrimidin-5-yl)-1H-pyrazole-4-sulfonic acid chloride

To a suspension of (+)-1-(4-cyanophenyl)-5-(3,6-dimethyl-2,4-dioxo-1-(3-trifluoromethylphenyl)-1,2,3,4-tetrahydropyrimidin-5-yl)-1H-pyrazole-4-sulfonic acid (prepared in Example 196) (315 mg) in acetonitrile (2.2 ml) were added pyridine (94 mg) and phosphorus oxychloride (365 mg) and the resulting mixture was stirred at room temperature for thirty minutes. To the reaction mixture was added water (5 ml) followed by an addition of ethyl acetate (10 ml×2) such that the intended products were extracted into an organic layer. The organic layer was washed with saturated saline (10 ml), dried over anhydrous sodium sulfate and then concentrated under reduced pressure to afford 1-(4-cyanophenyl)-5-(3,6-dimethyl-2,4-dioxo-1-(3-trifluoromethylphenyl)-1,2,3,4-tetrahydropyrimidin-5-yl)-1H-pyrazole-4-sulfonic acid chloride (330 mg).

1. extractionwere extracted into an organic layer
2. washThe organic layer was washed with saturated saline (10 ml)
3. dry with materialdried over anhydrous sodium sulfate
4. concentrationconcentrated under reduced pressure

ORD-Eintrag

ord-244543653c084225af2e6a84665c3a10

Quelldatensatz

uspto-grants-2015_05

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US09040516B2