反应详情

{2-[3-(2-Fluoro-3-methoxy-phenyl)-2,4,6-trioxo-[1,3,5]triazinan-1-yl]-1,1-dimethyl-ethyl}-carbamic acid tert-butyl ester (370 mg) was dissolved in 7 mL of anhydrous DMF. To this solution was added K2CO3 (2.0 eq, 226 mg) and 2-fluoro-6-(trifluoromethyl)benzyl bromide (1.0 eq, 222 mg). The reaction was complete by LC/MS after 14 hours. The DMF was removed in vacuo. The residue was partitioned between EtOAc and H2O. The EtOAc layer was collected and the aqueous layer was extracted with EtOAc (2×20 mL). The combined organics were washed with brine, dried over Na2SO4, filtered, and concentrated in vacuo. The residue was purified via flash column chromatography and eluted with 30% EtOAc/hexanes to yield 399 mg (76%). Rf=0.36 in 30% EtOAc/hexanes. 1H NMR (CDCl3) δ: 7.51 (d,1H), 7.39 (m,1H), 7.27 (d,1H), 7.15 (dt,1H), 7.06 (dt,1H), 6.88 (dt,1H), 5.42 (q,2H), 5.15 (bs,1H), 4.14 (q,2H), 3.9 (s,3H), 1.4 (s,9H), 1.39 (d,6H).

1. customThe DMF was removed in vacuo
2. customThe residue was partitioned between EtOAc and H2O
3. customThe EtOAc layer was collected
4. extractionthe aqueous layer was extracted with EtOAc (2×20 mL)
5. washThe combined organics were washed with brine
6. dry with materialdried over Na2SO4
7. filtrationfiltered
8. concentrationconcentrated in vacuo
9. customThe residue was purified via flash column chromatography
10. washeluted with 30% EtOAc/hexanes
11. customto yield 399 mg (76%)