反应详情

Di-tert-butyl (1S,2R,3R,4S,5R,6S)-4-amino-2-(tert-butoxycarbonylamino)-3-[(4-fluoro-3-methyl-phenyl)sulfanylmethyl]bicyclo[3.1.0]hexane-2,6-dicarboxylate (0.15 g, 264.67 μmol) is dissolved in dichloromethane (10 mL). To this mixture is added triethylamine (55.34 μL, 397.01 μmol) and acetyl chloride (28.25 μL, 397.01 μmol). The mixture is stirred at ambient temperature for 10 minutes. The solvent is removed under reduced pressure to give a residue. The residue is purified by flash chromatography (10% to 100% ethyl acetate/hexanes) to give the title compound (100 mg, 164.27 μmol, 62.06% yield); 1H NMR (CD3Cl) δ 1.44 (t, 27H), 1.95 (s, 3H), 2.16 (m, 1H), 2.22 (s, 3H), 2.60 (dd, 1H), 2.78 (bs, 1H), 3.10 (dd, 1H), 4.59 (m, 1H), 5.50 (d, 1H), 6.92 (t, 1H), 7.06 (m, 1H), 7.11 (d, 1H).

1. customThe solvent is removed under reduced pressure
2. customto give a residue
3. customThe residue is purified by flash chromatography (10% to 100% ethyl acetate/hexanes)