HCID 10551486, compound → 1,3-Diethyl 2-[[4-[2-(5-methyl-2-phenyl-4-oxazolyl)ethoxy]phenyl]methyl]propanedioate

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Reaction Steps

Diethyl 4-[2-(5-methyl-2-phenyl-4-oxazolyl)ethoxy]benzylidenemalonate (9.55 g, 21.3 mmol) obtained in Example 54 was dissolved in methanol (48 ml) and tetrahydrofuran (32 ml). 5% Palladium carbon (1 g) was added and the mixture was vigorously stirred at normal temperature under a hydrogen atmosphere (3.1 kgf/cm2). One and a half hours later, the catalyst was filtered off. The solvent was evaporated to give a crude solid. Recrystallization from ethyl acetate-hexane gave the title compound (5.23 g, yield 55%) as white crystals.

Provenance & Evidence