Phosphorus pentachloride → N-(2-chloro-4-trifluoromethoxyphenyl)-5-(methylsulfonyl)picolinimidoyl chloride

HRID 1478126Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1478126
[Cl:1][C:2]1[CH:7]=[C:6]([O:8][C:9]([F:12])([F:11])[F:10])[CH:5]=[CH:4][C:3]=1[NH:13][C:14]([C:16]1[CH:21]=[CH:20][C:19]([S:22]([CH3:25])(=[O:24])=[O:23])=[CH:18][N:17]=1)=O.P(Cl)(Cl)(Cl)(Cl)[Cl:27]>C1C=CC=CC=1>[Cl:1][C:2]1[CH:7]=[C:6]([O:8][C:9]([F:12])([F:11])[F:10])[CH:5]=[CH:4][C:3]=1[N:13]=[C:14]([Cl:27])[C:16]1[CH:21]=[CH:20][C:19]([S:22]([CH3:25])(=[O:24])=[O:23])=[CH:18][N:17]=1

Komponenten

4

Edukt 2

HCID 24819Phosphorus pentachlorideHCID 867096405-Methanesulfonyl-pyridine-2-carboxylic acid (2-chloro-4-trifluoromethoxy-phenyl)-amide

Produkt 1

HCID 86709641N-(2-chloro-4-trifluoromethoxyphenyl)-5-(methylsulfonyl)picolinimidoyl chloride

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 241BenzeneLösungsmittel

Versuchsvorschrift

5-Methanesulfonyl-pyridine-2-carboxylic acid (2-chloro-4-trifluoromethoxy-phenyl)-amide 7 (1.1 g, 2.79 mmol) in benzene (20 mL) was added to PCl5 (1.26 g, 6.0 mmol) and the mixture was heated to reflux overnight. The solvent was removed and the residue was further dried under high vacuum. Crude N-(2-chloro-4-trifluoromethoxyphenyl)-5-(methylsulfonyl)picolinimidoyl chloride was obtained as a yellow solid (1.60 g). The N-(2-chlor-4-trifluoromethoxyophenyl)-5-(methylsulfonyl)picolinimidoyl chloride was dissolved into anhydrous THF (30 mL) and the reaction was cooled down to 0° C. and hydrazine monohydrate (9.0 mL) was added. The reaction was kept at 0° C. for 10 min and warmed to ambient temperature in 0.5 h. The solvent was removed and the residue was purified by column chromatography (eluting with hexane and ethyl acetate 1:1) to give N′-(2-chloro-4-trifluoromethoxyphenyl)-5-(methylsulfonyl)picolinimidohydrazide 8 as a yellow solid. Yield: 0.56 g, 50%.

Aufarbeitung

  1. temperaturethe mixture was heated
  2. temperatureto reflux overnight
  3. customThe solvent was removed
  4. customthe residue was further dried under high vacuum

Quellen und Nachweise

ORD-Eintrag
ord-3dfef90e02e847a1860398e2f91c45f1
Quelldatensatz
uspto-grants-2016_08
Patentnummer
US09403812B2

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