Hexane → HCID 71544290, compound

Temperature

-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 record

ord-b874752915994a70a9616f108f716950

Source dataset

uspto-grants-2016_02

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09266873B2