反应详情

5-Cyclohexyl-6-(2,2,2-trifluoroethoxy)nicotinic acid methyl ester (95 mg, 299 μmol) was combined with THF (4 mL) and water (2 mL) to give a light yellow solution. Lithium hydroxide hydrate (25.1 mg, 599 μmol) was added under argon. The reaction mixture was stirred at ambient temperature over night; poured into 6 mL 2 M HCl solution and extracted with i-propyl acetate (2×60 mL). The organic layers were combined, dried over Na2SO4 and concentrated in vacuo to give the title compound (92 mg, quant.) as white solid that was used in the subsequent reactions without further purification; MS (ESI) 302.0 (M−H)−.

1. customto give a light yellow solution
2. extractionextracted with i-propyl acetate (2×60 mL)
3. dry with materialdried over Na2SO4
4. concentrationconcentrated in vacuo