Trifluoroacetic acid → HCID 76372517, compound

Participants

Reaction Steps

To a solution of 70 mg (0.085 mmol) of 4-(4,4-Difluorocyclohexyl)-3-{fluoro[4-(trifluoromethyl)phenyl]methyl}-2-{1-[5-(1-hydroxy-2-methylpropyl)pyrimidin-2-yl]piperidin-4-yl}-5-[(4-methoxybenzyl)oxy]-7,7-dimethyl-5,6,7,8-tetrahydroquinoline, which was prepared by a method similar to that of Reference Example 19, in 5 ml of dichloromethane, 2 ml of triethyl silane and 1 ml of trifluoroacetic acid were added, and the reaction solution was stirred at room temperature for 41 hours. After completion of the reaction, the reaction solution was poured into saturated sodium hydrogencarbonate aqueous solution and extracted with ethyl acetate. The organic layer was washed with saturated sodium chloride aqueous solution and dried with anhydrous magnesium sulfate, and then the solvent was distilled off under reduced pressure. The obtained residue was subjected to silica gel column chromatography [n-hexane/ethyl acetate=95/5-85/15 (V/V)] and the fraction including the desired compound was concentrated under reduced pressure. n-Hexane was added to the obtained residue and the precipitate was obtained by filtration to provide 16 mg of the title compound as a white solid (yield: 27%).

Provenance & Evidence