Diisopropylamine → 1429329-63-4

Temperature

-5 °C

To a stirred solution of diisopropylamine (0.283 mL, 2.01 mmol) in THF (15 mL) at −78° C. under nitrogen atmosphere was added 1.6M n-BuLi in hexane (1.25 mL, 2.01 mmol) slowly. The reaction mixture was stirred for 30 min at −5° C., cooled to −78° C., 2-(4-fluorophenyl)thiazole (300 mg, 1.67 mmol) in THF (5 mL) added, and then 4-acetyl pyridine (300 mg, 1.67 mmol) in THF (5 mL) added. The resulting mixture was stirred at −78° C. for 2 h. The reaction mixture was quenched with saturated NH4Cl solution (40 mL) and extracted with ethyl acetate (4×150 mL). The organic layer was dried over Na2SO4 and concentrated to obtain crude product. The crude product was purified by flash chromatography (100-200μ; 80% ethyl acetate in hexane) to afford 1-(2-(4-fluorophenyl)thiazol-5-yl)-1-(pyridin-4-yl)ethanol as off-white solid (285 mg, 57% yield), HPLC purity 99.9%, mp 229-232° C. 1H NMR (400 MHz, DMSO-d6): δ 8.53 (d, 2H), 7.92 (t, 2H), 7.81 (s, 1H), 7.49 (d, 2H), 7.30 (t, 2H), 6.66 (s, 1H), 1.93 (s, 3H); LC-MS m/z calculated for [M+H]+ 301.07. found 301.6.

1. temperaturecooled to −78° C.
2. stirringThe resulting mixture was stirred at −78° C. for 2 h
3. customThe reaction mixture was quenched with saturated NH4Cl solution (40 mL)
4. extractionextracted with ethyl acetate (4×150 mL)
5. dry with materialThe organic layer was dried over Na2SO4
6. concentrationconcentrated
7. customto obtain crude product
8. customThe crude product was purified by flash chromatography (100-200μ; 80% ethyl acetate in hexane)

ORD record

ord-ef9e91c4c6834c3bbed9e289447f059e

Source dataset

uspto-grants-2016_02

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09266873B2