Water → 2-Propen-1-yl {3-[5-(2-chloro-4-pyrimidinyl)-2-(1,1-dimethylethyl)-1,3-thiazol-4-yl]-2-fluorophenyl}carbamate

To a solution of 2-propen-1-yl {3-[(2-chloro-4-pyrimidinyl)acetyl]-2-fluorophenyl}carbamate (30 g, 85.9 mmol) (Intermediate 20) in DMA (300 mL), NBS (15.3 g, 85.9 mmol) was added. The reaction mixture was stirred at rt for 1 h. Then 2,2-dimethylpropanethioamide (11.0 g, 94.5 mmol) was added at 0° C. The mixture was stirred at rt for 2 h. The mixture was poured into water and extracted with EtOAc (200 mL×3). 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 purified by column chromatography on silica gel (DCM:petroleum ether 2:1) to afford the title compound. (11 g, 35.4% yield). 1H NMR (400 MHz, CDCl3) δ ppm 8.29 (d, J=5.27 Hz, 1H), 8.12-8.19 (m, 1H), 7.12-7.25 (m, 2H), 6.80-6.88 (m, 2H), 5.85-5.98 (m, 1H), 5.20-5.37 (m, 2H), 4.61-4.67 (m, 2H). MS (ES+): 447 [M+H]+.

1. stirringThe mixture was stirred at rt for 2 h
2. extractionextracted with EtOAc (200 mL×3)
3. washThe combined organic layers were washed with water and brine successively
4. dry with materialdried over Na2SO4
5. filtrationfiltered
6. concentrationconcentrated under reduced pressure
7. customto give the crude product, which
8. customwas purified by column chromatography on silica gel (DCM:petroleum ether 2:1)

ORDレコード

ord-0ae4fc6e9d8144ccb7d3d3fa19bc6376

出典データセット

uspto-grants-2014_02

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US08642759B2