Water → 5-methyl-2-(4-trifluoromethyl-1H-1-pyrazolyl)-4-(5-trifluoromethyl-3-thienyloxy)pyrimidine

HRID 1348992

Reaktionsgleichung

[CH3:1][C:2]1[C:3](S(C)(=O)=O)=[N:4][C:5]([N:8]2[CH:12]=[C:11]([C:13]([F:16])([F:15])[F:14])[CH:10]=[N:9]2)=[N:6][CH:7]=1.[OH:21][C:22]1[CH:26]=[C:25]([C:27]([F:30])([F:29])[F:28])[S:24][CH:23]=1.C([O-])([O-])=O.[K+].[K+].O>CN(C=O)C>[CH3:1][C:2]1[C:3]([O:21][C:22]2[CH:26]=[C:25]([C:27]([F:30])([F:29])[F:28])[S:24][CH:23]=2)=[N:4][C:5]([N:8]2[CH:12]=[C:11]([C:13]([F:14])([F:15])[F:16])[CH:10]=[N:9]2)=[N:6][CH:7]=1

Komponenten

Reaktionsbedingungen

Temperatur: 60 °C

Versuchsvorschrift

A mixture of 0.8 g (2.6 mmol) of 5-methyl-4-methylsulfonyl-2-(4-trifluoromethyl-1H-1-pyrazolyl)pyrimidine, 0.44 g (2.6 mmol) of 3-hydroxy-5-trifluoromethylthiophene and 0.72 g (5.2 mmol) of K2CO3 in 10 ml of DMF is stirred at 60° C. for 6 h and then at RT for 48 h. It is subsequently poured into 20 ml of water and extracted with four times 15 ml of CH2Cl2. The combined organic phase is dried over Na2SO4, filtered and concentrated. Chromatographic purification on silica gel with heptane/ethyl acetate (3:7) as eluent gives 0.5 g of 5-methyl-2-(4-trifluoromethyl-1H-1-pyrazolyl)-4-(5-trifluoromethyl-3-thienyloxy)pyrimidine as colorless crystals.

Aufarbeitung

waitat RT for 48 h
extractionextracted with four times 15 ml of CH2Cl2
dry with materialThe combined organic phase is dried over Na2SO4
filtrationfiltered
concentrationconcentrated
customChromatographic purification on silica gel with heptane/ethyl acetate (3:7) as eluent

Quellen und Nachweise

ORD-Eintrag: ord-ad7f256597b642deaaac25c4a74854c8
Quelldatensatz: uspto-grants-2007_05
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US07211673B2

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