Triethylsilane → 4-(4-Bromo-2-methylphenyl)butanoic acid
반응식
[Br:1][C:2]1[CH:7]=[CH:6][C:5]([C:8](=O)[CH2:9][CH2:10][C:11]([OH:13])=[O:12])=[C:4]([CH3:15])[CH:3]=1.C([SiH](CC)CC)C>C(O)(C(F)(F)F)=O>[Br:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][CH2:9][CH2:10][C:11]([OH:13])=[O:12])=[C:4]([CH3:15])[CH:3]=1참가 물질
4
반응 조건
- 온도
- 90 °C
실험 절차
To a solution of 55A (542 mg, 2 mmol) in TFA (5 mL) was added triethylsilane (0.8 mL, 5 mmol) and the mixture heated at 90° C. for 7 h. The reaction was quenched with 1N NaOH (20 mL) and washed with EtOAc (20 mL). Aqueous layer was acidified to pH 1 with 1N HCl and extracted with EtOAc (2×20 mL). The combined organics were washed with brine (10 mL) and dried (MgSO4). The organic layer was concentrated in vacuo and the residue purified by flash chromatography (0-100% EtOAc/Hexane) to afford 55B (216 mg, 42%) as an oil. 1H NMR (400 MHz, CDCl3) δ ppm 0.98 (t, 3 H) 2.42 (q, 2 H) 2.73 (t, 2 H) 4.10 (t, 2 H) 6.82 (d, 1 H) 7.02 (d, H) 7.09 (t, 2 H) 7.15 (t, 1 H) 7.36 (d, 1 H) 7.58-7.63 (m, 1 H).