Iodine → HCID 86610529, compound

Participants

Reaction Conditions

Reaction Steps

Methyl 3,5-bis(methoxymethoxy)-2-(4-methoxybenzoyl)-phenylacetate (0.75 g, 1.9 mmol) obtained in Example 134, Step 2 was dissolved in dichloromethane (20 mL). The resulting solution was cooled to −30° C., and iodine (0.47 g, 1.9 mmol) and [bis(trifluoroacetoxy)iodo]benzene (0.8 g, 1.9 mmol) were successively added thereto in an atmosphere of argon, followed by stirring for 2 hours. To the reaction mixture was added a saturated aqueous solution of sodium thiosulfate, and the mixture was further stirred for one hour, while the temperature was raised to room temperature. To the reaction mixture was added water for liquid separation, and the aqueous layer was extracted with ethyl acetate. The organic layers were combined, dried over anhydrous sodium sulfate, and then concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography (ethyl acetate/hexane=1/4-1/2) to obtain methyl 3,5-bis(methoxymethoxy)-2-iodo-6-(4-methoxybenzoyl)phenylacetate (0.95 g, 96%).

Provenance & Evidence