Hexane → HCID 71544290, Verbindung

Temperatur

-78 °C

A solution of 4-iodopyridine (133 mg, 0.65 mmol) in THF (15 mL) was cooled to −78° C., 1.6 M n-BuLi in hexane (0.81 mL, 1.3 mmol) slowly added at −78° C., the reaction mixture stirred for 20 min at −78° C., and 1-(2-(1H-pyrazol-4-yl)thiazol-5-yl)propan-1-one (135 mg, 0.65 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 (10 mL) and extracted with ethyl acetate (2×250 mL). The combined extracts were washed with brine solution (10 mL), dried over Na2SO4, filtered and concentrated under reduced pressure to obtain crude product. The crude product was purified by preparative TLC (mobile phase: 5% methanol in dichloromethane) to afford 1-(2-(1H-pyrazol-4-yl)thiazol-5-yl)-1-(pyridin-4-yl)propan-1-ol as pale yellow liquid (13 mg, 5% yield) in 99.4% HPLC purity. 1H NMR (400 MHz, DMSO-d6): δ 13.19 (br s, 1H), 8.51 (d, 2H), 8.24 (br s, 1H), 7.87 (br s, 1H), 7.65 (s, 1H), 7.45 (d, 2H), 6.29 (s, 1H), 2.32-2.23 (m, 2H), 0.77 (t, 3H); LC-MS m/z calculated for [M+H]+287.09, found 287.1

1. stirringThe resulting mixture was stirred at −78° C. for 2 h
2. customThe reaction mixture was quenched with saturated NH4Cl solution (10 mL)
3. extractionextracted with ethyl acetate (2×250 mL)
4. washThe combined extracts were washed with brine solution (10 mL)
5. dry with materialdried over Na2SO4
6. filtrationfiltered
7. concentrationconcentrated under reduced pressure
8. customto obtain crude product
9. customThe crude product was purified by preparative TLC (mobile phase: 5% methanol in dichloromethane)

ORD-Eintrag

ord-7bf47c9f615747859cb803b036dbef3b

Quelldatensatz

uspto-grants-2014_08

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08809372B2