4-(2,3-Dihydrobenzofuran-7-yl)-4-methyl-2-(trifluoromethyl)pentane-1,2-diol → 4-(2,3-Dihydrobenzofur-7-yl)-1,1,1-trifluoro-4-methyl-2-pentanone

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Reaction Steps

A solution of 4-(2,3-dihydrobenzofuran-7-yl)-4-methyl-2-trifluoromethylpentane-1,2-diol (24.0 g, 78.9 mmol) and NaIO4 (84.3 g, 394 mmol) in 360 mL of methanol was stirred at room temperature overnight. The resulting mixture was filtered through pad of CELITE® filter aid and the filter cake was washed with three 100 mL portions of methanol. The filtrate was concentrated in vacuo, taken up in hexanes, filtered again, and concentrated in vacuo to give 21.4 g of 4-(2,3-dihydrobenzofuran-7-yl)-1,1,1-trifluoro-4-methylpentan-2-one as colorless oil (quantitative yield), which was used without purification.

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