反应详情

To a solution of NaH (60% dispersed in oil, 32 mg, 0.81 mmo) in THF (4 mL) at 0° C. was added alcohol 1 (180 mg, 0.62 mmol) in THF (1 mL) and the reaction mixture was stirred for 30 min at this temperature. Then 3-pyridyl isothiocyanate (169 mg, 124 mmol) in THF (1 mL) was added and stirred at rt. After stirring for 12 h, the reaction mixture was quenched water and extracted with EtOAc (3×). The organic layer was dried and concentrated to get a residue, which was purified by column chromatography (Hexane/EtOAc) to yield thiocarbamate 38a as a viscous liquid (179 mg, 70%). TLC Rf: 0.23 (20% EtOAc/hexanes); 1H NMR (300 MHz, CDCl3): δ 8.55 (d, 1H), 8.40 (d, 1H), 7.95 (m, 1H), 7.30 (m, 2H), 5.49 (t, 1H), 5.11 (m, 3H), 4.70 (d, 2H), 2.16-1.19 (m, 12H), 1.76 (s, 3H), 1.68 (s, 3H), 1.60 (s, 9H); LCMS: MS (m/z): 427 (M+H).

1. stirringstirred at rt
2. stirringAfter stirring for 12 h
3. customthe reaction mixture was quenched water
4. extractionextracted with EtOAc (3×)
5. customThe organic layer was dried
6. concentrationconcentrated
7. customto get a residue, which
8. customwas purified by column chromatography (Hexane/EtOAc)