Diethyl Ether → 8-Methoxymethoxy-2,2,4-trimethyl-1,2-dihydro-6-oxa-1-azachrysen-5-one

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Reaction Conditions

Reaction Steps

A mixture of 8-hydroxy-2,2,4-trimethyl-1,2-dihydro-6-oxa-1-azachrysen-5-one (Reference Compound No. 1-1-(4), 1.00 g, 3.25 mmol), chlorodimethylether (420 μL, 5.53 mmol) and potassium carbonate (1.35 g, 9.77 mmol) was suspended in anhydrous N,N-dimethylformamide (15 mL) and stirred at 50° C. overnight. After cooling down, ethyl acetate (100 mL) and diethylether (100 mL) were added thereto. The whole was washed with water (150 mL, 100 mL) and saturated brine (100 mL) successively, dried over anhydrous magnesium sulfate, and then the solvent was removed under reduced pressure. The obtained residue was purified by silica gel column chromatography (hexane-ethyl acetate) to give the titled reference compound (747 mg) as a yellow solid. (Yield 66%)

Provenance & Evidence