Lithium Hydroxide → HCID 21107176, compound

Participants

Reaction Steps

A solution of {4-[5-(cyclopropyl-methyl-amino)-4-isopropoxy-8,8-dimethyl-5,6,7,8-tetrahydro-naphthalen-2-ylethynyl]-phenyl}-acetic acid methyl ester (Intermediate 129, 0.045 g, 0.098 mmol) in methanol (2 mL) and tetrahydrofuran (2 mL) was treated with 2M lithium hydroxide (1 mL, 2 mmol) and the resulting reaction mixture was stirred at ambient temperature for 2 h. The volatiles were evaporated in vacuo to a residue that was neutralized with saturated aqueous ammonium chloride solution and extracted with ethyl acetate. The organic phase was washed with water and brine, and dried over anhydrous magnesium sulfate, filtered and evaporated in vacuo to a residue that was subjected to flash column chromatography over silica gel (230-400 mesh) using 5% methanol in ethyl acetate as the eluent to afford the title product as a white solid (0.027 g, 61%).

Provenance & Evidence