Water → HCID 11270506, compound

Participants

Reaction Steps

To a solution of 3-(4-tert-butylphenyl)-2,2,4,6,7-pentamethyl-2,3-dihydro-1-benzofuran-5-amine hydrochloride obtained in Reference Example 76 (400 mg, 1.16 mmol) and tert-butylacetyl chloride (0.17 mL, 1.22 mmol) in dichloromethane (10 mL) was added triethylamine (0.35 mL, 2.50 mmol) at room temperature, and the mixture was stirred at room temperature for 1 hour. Water was added to the reaction solution, the organic layer was separated, and the aqueous layer was extracted with dichloromethane. The combined organic layers were washed with 1 N hydrochloric acid and an aqueous saturated sodium hydrogen carbonate solution, dried over magnesium sulfate, filtered, and then concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (hexane ethyl acetate=8:1) to obtain 110 mg (yield: 41%) of the title compound. Amorphous substance.

Provenance & Evidence