Reaktion #1447122

Reaktionsgleichung

[2-(3-methylbutyl)phenyl]amine

5-fluoro-1,3-dimethyl-1H-pyrazole-4-carbonyl chloride

triethylamine

→

5-fluoro-1,3-dimethyl-N-[2-(3-methylbutyl)phenyl]-1H-pyrazole-4-carboxamide

Ausbeute 98.0%

Lösungsmittel

tetrahydrofuran

Reaktionsbedingungen

Aufarbeitung

1. 1
   Filtrationfiltered through silica gel
2. 2
   Einengenconcentrated

Vorschrift

326.5 mg (2.0 mmol) of [2-(3-methylbutyl)phenyl]amine (III-1) are added to a solution comprising 388.5 mg (2.2 mmol) of 5-fluoro-1,3-dimethyl-1H-pyrazole-4-carbonyl chloride and 0.45 ml (3.2 mmol) of triethylamine in 20 ml of tetrahydrofuran. The reaction solution is stirred at 60° C. for 90 min, filtered through silica gel and concentrated. Column chromatography (cyclohexane/ethyl acetate gradient) gives 592 mg (98% of theory) of 5-fluoro-1,3-dimethyl-N-[2-(3-methylbutyl)phenyl]-1H-pyrazole-4-carboxamide of logP (pH 2.3)=3.12.

Quelle