Acetic Acid → 5-[5-(2-Chloro-4-pyrimidinyl)-2-(1,1-dimethylethyl)-1,3-thiazol-4-yl]-2-fluoroaniline

To a solution of 2-propen-1-yl {5-[5-(2-chloro-4-pyrimidinyl)-2-(1,1-dimethylethyl)-1,3-thiazol-4-yl]-2-fluorophenyl}carbamate (35 g, 78.4 mmol) in DCM (400 mL), HOAc (11.3 g, 188 mmol), Pd(PPh3)2Cl2 (1.1 g, 1.57 mmol) were added. Then tri-n-butyl tin hydride (34.2 g, 117 mmol) was added dropwise to the mixture at 0° C. The mixture was stirred at rt for 30 min. The reaction was quenched by added the saturated NaHCO3 (400 mL) slowly. The two layers were separated. The aqueous layer was extracted with DCM (500 mL×2). The combined organic layers were washed with water and brine successively, dried over Na2SO4, filtered and concentrated under reduced pressure to give the crude product, which was washed with petroleum ether (200 mL) to afford the title compound (18.3 g, 64.4% yield). 1H NMR (400 MHz, CDCl3) δ ppm 8.31 (d, J=5.5 Hz, 1H), 6.96-7.03 (m, 3H), 6.78-6.83 (m, 1H), 2.30-2.60 (br, 2H), 1.48 (s, 9H).

1. customThe reaction was quenched
2. additionby added the saturated NaHCO3 (400 mL) slowly
3. customThe two layers were separated
4. extractionThe aqueous layer was extracted with DCM (500 mL×2)
5. washThe combined organic layers were washed with water and brine successively
6. dry with materialdried over Na2SO4
7. filtrationfiltered
8. concentrationconcentrated under reduced pressure
9. customto give the crude product, which
10. washwas washed with petroleum ether (200 mL)

ORD record

ord-969cdae11b5e42ccba5c9b3855627704

Source dataset

uspto-grants-2011_08

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07994185B2