反应 #3763274
相关文献 (1)
openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US08106088B2
反应条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: The methanesulfonic acid 2-(5-bromo-benzothiazol-2-yl)-ethyl ester from Example 1B, and 2 equivalents (7.3 mmol) of 2-(R)-methylpyrrolidine (at a concentration of 10 mg/mL solution in acetonitrile), was combined with excess Et3N (0.99 g, 9.8 mmol), and the resulting mixture was heated to 60° C. for 2 hr. The solvent was removed under vacuum, and the residue dissolved in CH2Cl2. and washed with saturated NaHCO3 (twice). The organic layer as dried over MgSO4 and concentrated in vacuo to give crude product, 1.15 g (97.1%). 1H NMR (400 MHz, CDCl3) δ ppm 1.06 (d, J=6.04 Hz, 3 H) 1.78-1.6 (m, 3 H) 1.88 (m, 1H) 2.20 (m, 1 H) 2.38 (m, 1H) 2.55 (m, 1H) 3.23 (m, 4 H) 7.37 (dd, J=8.44, 1.85 Hz, 1 H) 7.61 (d, J=8.51 Hz, 1 H) 8.02 (d, J=1.92 Hz, 1 H). MS m/z 125,127 (M+H)+, (M+3H)+. The solvent was removed under vacuum the residue dissolved in CH2Cl2 and washed with saturated NaHCO3 (twice) The organic layer as dried over MgSO4 concentrated in vacuo to give crude product, 1.15 g (97.1%)
来源 ID: ord-040ac4afe6524f449eb303df14d9c18d