反应详情

温度

90 °C

To a solution of (3aR,7S,7aS)-7-(4-amino-3-fluoro-5-iodo-benzyl)-3-(3-tert-butyl-benzyl)-5,5-dioxo-hexahydro-1-oxa-5lambda*6*-thia-3-aza-inden-2-one (0.65 g, 1.1 mmol), NEt3 (0.54 mL, 3.9 mmol) and potassium vinyltrifluoroborate (0.39 g, 2.7 mmol) in n-propanol (20 mL) was added after degassing with argon (1,1′-bis(diphenylphosphino)ferrocene)-dichloro-palladium (0.063 g, 0.078 mmol) and the reaction mixture was heated at 90° C. for 3.5 h. After dilution with saturated NaHCO3 solution the product was extracted with EtOAc. Combined organic extracts were washed with brine, dried over MgSO4, filtered and evaporated. The title compound was obtained after chromatographic purification (Combi Flash, 40 g, hexane-EtOAc 5:95 to 0:100) as a yellow solid: TLC (toluene-EtOAc 3:1) Rf=0.38; UPLC RtD=1.756 min; ESIMS [M+NH4]+=504; 1H NMR (400 MHz, CDCl3): δ 7.38 (d, 1H), 7.30 (m, 2H). 7.09 (d, 1H), 6.80 (s, 1H), 6.72 (dd, 1H), 6.66 (d, 1H), 5.64 (d, 1H), 5.39 (d, 1H), 4.53 (d, 1H), 4.33 (d, 1H), 3.7-3.9 (m, 4H), 3.05 (m, 3H), 2.82 (dd, 1H), 2.72 (m, 1H), 2.60 (m, 2H), 1.31 (s, 9H).

1. extractionAfter dilution with saturated NaHCO3 solution the product was extracted with EtOAc
2. washCombined organic extracts were washed with brine
3. dry with materialdried over MgSO4
4. filtrationfiltered
5. customevaporated