Reaktion #2183004

Reaktionsgleichung

(2,6-dichlorophenyl)hydrazine•hydrochloride

potassium carbonate

diethyl ethoxymethylenemalonate

→

title compound

Ausbeute 73.0%

ethyl 2-(2,6-dichlorophenyl)-3-oxo-2,3-dihydro-1H-pyrazole-4-carboxylate

Ausbeute 73.0%

Lösungsmittel

water

Reaktionsbedingungen

Vorschrift

In the same manner as in Reference Example 63 and using (2,6-dichlorophenyl)hydrazine•hydrochloride (4.8 g, 23 mmol), water (100 mL), potassium carbonate (6.9 g, 50 mmol) and diethyl ethoxymethylenemalonate (5.9 g, 27 mmol) as starting materials, the title compound (5.0 g, 73%) was obtained as a pale-yellow solid.

Quelle