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A solution of 2-methyl-6-(4-trifluoromethoxy-phenyl)-4-trifluoromethyl-nicotinic acid ethyl ester (400 mg, 1 mmol) in diethyl ether (6 ml) was added to a suspension of lithium aluminium hydride (77 mg, 2 mmol) in diethyl ether (12 ml) under an argon atmosphere at ambient temperature within 5 min. The mixture was stirred at reflux for 12 h, cooled to 0° C. and treated cautiously with ice water (12 ml) and 10% aqueous NaOH (6 ml). The reaction mixture was filtered over celite, t-butyl methylether was added and the layers were separated. The aqueous layer was extracted one more time with t-butyl methylether, the combined organic layers were washed with ice water/brine 1/1 and dried over sodium sulfate. Removal of the solvent under reduced pressure gave an orange oil which was purified by column chromatography (silica gel, heptane/AcOEt) to yield 140 mg (400 μmol, 39%) of the title compound as colorless crystals.

1. temperatureat reflux for 12 h
2. filtrationThe reaction mixture was filtered over celite, t-butyl methylether
3. additionwas added
4. customthe layers were separated
5. extractionThe aqueous layer was extracted one more time with t-butyl methylether
6. washthe combined organic layers were washed with ice water/brine 1/1
7. dry with materialdried over sodium sulfate
8. customRemoval of the solvent under reduced pressure
9. customgave an orange oil which
10. customwas purified by column chromatography (silica gel, heptane/AcOEt)