反应详情

As in Example 19, 4-[2-[4'-fluoro-3-(1-methylethyl)[1,1'-biphenyl]-2-yloxy]ethoxy]-alpha-oxobenzeneacetic acid methyl ester (0.186 g) in a mixture of methanol (2 mL) and tetrahydrofuran (1 mL) was treated with 1N potassium hydroxide (0.52 mL). The usual work up gave 0.17 g of a solid, which after crystallization from diethyl ether-hexane afforded 0.12 g of 4-[2-[4'-fluoro-3-(1-methylethyl)[1,1'-biphenyl]-2-yloxy]ethoxy]-alpha-oxobenzeneacetic acid, mp 123°-125° C.

1. customThe usual work up gave 0.17 g of a solid, which after crystallization from diethyl ether-hexane