Lithium Hydroxide → HCID 67486669, compound

Participants

Reaction Steps

To the crude 4-[2-(4-Benzofuran-2-ylphenylcarbamoyl)-3-(4-cyclohex-1-enylphenyl)-propyl]-benzoic acid methyl ester from step e dissolved in 20 mL of THF/MeOH/H2O (3:1:1) was added lithium hydroxide (74 mg, 1.8 mmol) After stirring for 5 hrs at RT, the organic solvents were removed under vacuum and the reaction residue diluted further with water (25 mL). The aqueous mixture was made acidic with 1 N HCl and extracted with ethyl acetate. The ethyl acetate portion was then dried over Na2SO4 and concentrated under vacuum to afford 4-[2-(4-Benzofuran-2-ylphenylcarbamoyl)-3-(4-cyclohex-1-enylphenyl)-propyl]-benzoic acid which was carried on as is for the next step.

Provenance & Evidence