Sodium Hydroxide → HCID 10231423, compound

Participants

Reaction Steps

A solution of [2-(4-(2-(3-methoxy-4-(3-o-tolyl-ureido)-phenyl)-acetylamino)-phenyl)-indan-2-yl]-acetic acid ethyl ester (0.06 g, Reference Example 16) in ethanol (10 mL) was treated with aqueous sodium hydroxide (300 μL, 1N) and the mixture was heated at reflux temperature for 8 hours and then left at room temperature overnight and then evaporated. The residue was treated with water (20 mL) and the mixture was warmed to aid dissolution. This solution was acidified to pH 1 by addition of hydrochloric acid (1N) when a precipitate was formed. The mixture was kept at 0° C. for 30 minutes then extracted with ethyl acetate. The ethyl acetate extract was dried over magnesium sulfate and then evaporated. The residual white solid was subjected to chromatography [gradient HPLC using 50% acetonitrile and water, 1 mL/minute] to give the title compound (0.03 g) as a white solid.

Provenance & Evidence