Pyridine → 2-Methyl-1,3-cyclohexanedione

Beteiligte Stoffe

Reaktionsschritte

Add to the crude undistilled ketoamine 1-diethylamino-6-(m-methoxyphenyl)hexan-3-one (2.3 g), the material obtained by hydration of the acetylenic amine, 2-methylcyclohexane-1,3-dione (1 g), pyridine (1 cc) and benzene (12 cc), and reflux the mixture for 15 hours. Cool the mixture and filter off unreacted dione, add a little ether to the filtrate, and wash the ethereal solution with acid, and then water, and dry. Evaporate the solvents to obtain as residue crude 2-(6-m-methoxyphenyl-3-oxohexyl)-2-methylcyclohexane-1,3-dione (1.7 g).

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