1,4-Dioxane hydrochloride → HCID 57320402, compound

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Reaction Steps

The compound obtained in Example 224 (3.0 g, 6.9 mmol) was dissolved in dimethylformamide (200 ml). To the obtained solution, 10% palladium-on-carbon (3.0 g) was added, followed by stirring at room temperature overnight in the atmosphere of hydrogen. The reaction mixture was filtered, and the filtrate was condensed under reduced pressure. The resultant residue was dissolved in methanol (20 ml), and 4N-HCl dioxane (4 ml) was added thereto while cooling on ice. The mixture was condensed under reduced pressure. The resultant residue was recrystallized from methanol--ether to obtain 1.5 g of the title compound as pale yellow powdery crystals (64.4%).

Provenance & Evidence