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ChemicalBook CAS DataBase List 6-CHLORO-[1,2,4]TRIAZOLO[4,3-B]PYRIDAZINE
28593-24-0

6-CHLORO-[1,2,4]TRIAZOLO[4,3-B]PYRIDAZINE synthesis

10synthesis methods
-

Yield:28593-24-0 71%

Reaction Conditions:

in isopropyl alcohol; for 3 h;Heating / reflux;

Steps:

39.1; C

A mixture of (6-chloro-pyridazin-3-yl)-hydrazine (1.0 g, 7.0 mmol) and cyclohexanone (9-diethoxymethyloxinie (1.5 g, 7.0 mmol) was refluxed in isopropyl (10 ml) for 3 hours, and cooled to room temperature. The produced precipitate was filtered, and recrystalized with dichloromethane to obtain the title compound as a white solid (720 mg, 71%).

References:

WO2008/69500,2008,A1 Location in patent:Page/Page column 9-10; 24

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