Tetrabutylammonium Fluoride → (1S,2S)-2-{4-[(R)-4-(4-Hydroxy-phenyl)-5-trifluoromethyl-indan-1-yloxy]-phenyl}-cyclopropanecarboxylic acid ethyl ester

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Reaction Steps

(1S,2S)-2-(4-{(R)-4-[4-(tert-Butyl-dimethyl-silanyloxy)-phenyl]-5-trifluoromethyl-indan-1-yloxy}-phenyl)-cyclopropanecarboxylic acid ethyl ester (90 mg, 0.15 mmol is suspended in dry tetrahydrofuran (4.5 mL) and tetrabutylammonium fluoride (1 M in tetrahydrofuran, 0.3 mL, 0.3 mmol) is added. The mixture stirred for 2 hours then diluted with saturated ammonium chloride solution and extracted with ethyl acetate. The organic phase is dried and concentrated under vacuum. The residue is purified by flash chromatography (eluent: 0-20% EtOAc in cyclohexane) to give an impure product which is used directly in the next step.

Provenance & Evidence