Lithium hydroxide, monohydrate → 4-(3-tert-Butoxycarbonyl-propoxy)-3-methyl-benzoic Acid

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반응 단계

Lithium hydroxide monohydrate (137 mg, 3.26 mmol) was added to a solution of 4-(3-tert-butoxycarbonyl-propoxy)-3-methyl-benzoic acid methyl ester from Example E42.2 (414 mg, 1.34 mmol) in THF (10 ml) and water (5 ml). The mixture was stirred for 48 h at room temperature and concentrated in vacuo. The residue was dissolved in chloroform, acidified with 1M HCl then washed with brine, dried and concentrated in vacuo to yield the title compound (275 mg, 70%).

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