Sodium Hydroxide → HCID 19004300, compound

Participants

Reaction Steps

As in Example 19, a solution of 4-[3-[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl] thio]propoxy]-alpha-oxobenzeneacetic acid ethyl ester (0.32 g) in methanol (15 mL) was treated with 2N sodium hydroxide (0.75 mL) was stirred at room temperature. After 3 hours, most of the methanol was removed in vacuo, then the mixture was acidified with 3N hydrochloric acid and extracted with dichloromethane-tetrahydrofuran (1:1). The dried (MgSO4) extracts were evaporated and the crude product was purified by flash chromatography over silica gel (toluene-ethyl acetate-acetic acid; 80:20:0.25 increasing to 74:25:1) to give 4-[3-[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]thio]propoxy]-alpha-oxobenzeneacetic acid as an oil.

Provenance & Evidence