(Trifluoromethyl)trimethylsilane → 1-(6-Bromopyridin-2-yl)-2,2,2-trifluoroethan-1-ol

温度

0 °C

6-Bromopyridine-2-carbaldehyde (1.0 g, 5.38 mmol) was dissolved in 35 mL THF and cooled to 0° C. TMSCF3 (1.0 mL, 6.45 mmol) was added followed by tetrabutylammonium fluoride (6.45 mL of 1.0M in THF). The ice bath was removed and the reaction was stirred for 4.5 hours at room temperature. The reaction was then diluted with water and brine and extracted with ethyl acetate three times. The organic layers were combined and dried over magnesium sulfate, filtered, and concentrated under reduced pressure. Purification by silica gel chromatography (0-40% ethyl acetate/hexanes) afforded the title compound. 1H NMR (600 MHz, d6-DMSO) δ 7.83 (m, 1H), 7.67 (d, 1H), 7.63 (d, 1H), 7.15 (d, 1H), 5.11 (m, 1H).

1. customThe ice bath was removed
2. additionThe reaction was then diluted with water and brine
3. extractionextracted with ethyl acetate three times
4. dry with materialdried over magnesium sulfate
5. filtrationfiltered
6. concentrationconcentrated under reduced pressure
7. customPurification by silica gel chromatography (0-40% ethyl acetate/hexanes)

ORDレコード

ord-955fb7fdd92c498b9c2686b54f34ef49

出典データセット

uspto-grants-2012_10

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US08278335B2