1,4-Dioxane → HCID 68862226, compound

Participants

Reaction Steps

A mixture of the compound of Example 68 (0.80 g), dioxane (100 ml), methanol (10 ml) and 10% palladium carbon (0.16 g) was hydrogenated at 40° C. with stirred for 6 hours. The reaction solution was filtered, and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent: methanol/chloroform=1/9) and recrystallized from ethanol, thereby giving 0.40 g of the desired compound. Melting point: 216-220° C.

Provenance & Evidence