Methanol → 4-[(8-Cycloproply-3 4-dihydro-4,4-dimethylspiro[2H-1-benzopyran-2,1'-cyclopropane]-6-yl)ethynyl]-2-fluoro-benzeneacetic acid

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Reaction Steps

Following general procedure L and using 4-[(8-cyclopropyl-3,4-dihydro-4,4-dimethylspiro[2H-1-benzopyran-2,1′-cyclopropane]-6-yl)ethynyl]-2-fluoro-benzeneacetic acid methyl ester (Compound 49, 0.096 g, 0.23 mmol), 5 mL of methanol and 1M sodium hydroxide solution (2 mL) followed by flash column chromatography over silica gel (230-400 mesh) using 15% methanol in dichloromethane as the eluent, the title compound was obtained as a solid (0.093 g, 100%).

Provenance & Evidence