Sodium Bicarbonate → 4-fluoro-2-((S)-2-methoxy-1-methyl-ethylamino)-benzoic acid tert-butyl ester

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Reaction Conditions

Reaction Steps

A mixture of 2,4-difluoro-benzoic acid tert-butyl ester (30 g, 140.05 mmol) and (S)-2-methoxy-1-methyl-ethylamine (100 mL) was stirred at 65° C. for 2 days. A saturated solution of NaHCO3 was added and the mixture was extracted with dichloromethane (3×). The organic phase was washed with water (2×), brine, dried over sodium sulfate filtered and evaporated to dryness to obtain a crude, which was purified by column chromatography on silica gel (exane-EtOAc 9:1). The title compound (33.38 g, 84%) was obtained as oil.

Provenance & Evidence