Lithium hydroxide, monohydrate → 2-(2-tert-Butoxy-2-oxoethyl)-6-(3-chloro-4-fluorobenzyl)-4-methoxy-3,5-dioxo-2,3,5,6,7,8-hexahydro-2,6-naphthyridine-1-carboxylic acid

Participants

Reaction Steps

A mixture of methyl 2-(2-tert-butoxy-2-oxoethyl)-6-(3-chloro-4-fluorobenzyl)-4-methoxy-3,5-dioxo-2,3,5,6,7,8-hexahydro-2,6-naphthyridine-1-carboxylate (0.49 g, 0.96 mmol) and lithium hydroxide monohydrate (0.12 g, 2.9 mmol) in a mixture of tetrahydrofuran (3 mL) and water (2 mL) was stirred at room temperature for one hour. The reaction mixture was concentrated under vacuum. The residue was partitioned between dichloromethane and dilute hydrochloric acid. The organic extract was dried over anhydrous sodium sulfate, filtered, and concentrated under vacuum to provide the title compound. This was used in the following step without further purification. ES MS M+1=495

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