2-(2-methoxyethyl)-1,3-dithiane

反応条件: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A solution of 1,3-dithiane (15.12 g, 126.0 mmol) in dry THF (150 mL) was treated at 0° C. with BuLi (53.0 mL of a 2.5 M solution, 132.5 mmol, 1.05 eqiuv) for 1.5 h. The reaction mixture was cooled to −78° C., and 2-bromoethyl methyl ether was added (11.3 mL, 16.7 g, 120.2 mmol). The reaction mixture was allowed to warm overnight to room temperature. The reaction was quenched by addition of saturated aqueous NH Cl. The mixture was extracted with Et2O. The combined organic extracts were washed with water. The mixture was dried over Na2SO4. The mixture was filtered. The filtrate was concentrated at reduced pressure. The residue was chromatographed [silica, ethyl acetate/hexanes (1:19)] affording a viscous, colorless liquid (21.53 g, 96%): 1H NMR δ 1.84-1.93 (m, 1H), 1.96-2.03 (m, 2H), 2.07-2.15 (m, 1H), 2.78-2.93 (m, 4H), 3.34 (s, 3H), 3.51-3.55 (m, 4H), 4.19 (t, J=6.9 Hz, 1H); 13C NMR δ 26.16, 30.40, 35.58, 44.16, 58.84, 68.92; EI-MS: 178 (M+), 146, 133, 119/121, 71/73, 45. to warm overnight to room temperature The reaction was quenched by addition of saturated aqueous NH Cl The mixture was extracted with Et2O The combined organic extracts were washed with water The mixture was dried over Na2SO4 The mixture was filtered The filtrate was concentrated at reduced pressure The residue was chromatographed [silica, ethyl acetate/hexanes (1:19)]

反応条件: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A solution of 1,3-dithiane (15.12 g, 126.0 mmol) in dry THF (150 mL) was treated at 0° C. with BuLi (53.0 mL of a 2.5 M solution, 132.5 mmol, 1.05 eqiuv) for 1.5 h. The reaction mixture was cooled to −78° C., and 2-bromoethyl methyl ether was added (11.3 mL, 16.7 g, 120.2 mmol). The reaction mixture was allowed to warm overnight to room temperature. The reaction was quenched by addition of saturated aqueous NH Cl. The mixture was extracted with Et2O. The combined organic extracts were washed with water. The mixture was dried over Na2SO4. The mixture was filtered. The filtrate was concentrated at reduced pressure. The residue was chromatographed [silica, ethyl acetate/hexanes (1:19)] affording a viscous, colorless liquid (21.53 g, 96%): 1H NMR δ 1.84-1.93 (m, 1H), 1.96-2.03 (m, 2H), 2.07-2.15 (m, 1H), 2.78-2.93 (m, 4H), 3.34 (s, 3H), 3.51-3.55 (m, 4H), 4.19 (t, J=6.9 Hz, 1H); 13C NMR δ 26.16, 30.40, 35.58, 44.16, 58.84, 68.92; EI-MS: 178 (M+), 146, 133, 119/121, 71/73, 45. to warm overnight to room temperature The reaction was quenched by addition of saturated aqueous NH Cl The mixture was extracted with Et2O The combined organic extracts were washed with water The mixture was dried over Na2SO4 The mixture was filtered The filtrate was concentrated at reduced pressure The residue was chromatographed [silica, ethyl acetate/hexanes (1:19)]

反応条件: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A solution of 1,3-dithiane (15.12 g, 126.0 mmol) in dry THF (150 mL) was treated at 0° C. with BuLi (53.0 mL of a 2.5 M solution, 132.5 mmol, 1.05 eqiuv) for 1.5 h. The reaction mixture was cooled to −78° C., and 2-bromoethyl methyl ether was added (11.3 mL, 16.7 g, 120.2 mmol). The reaction mixture was allowed to warm overnight to room temperature. The reaction was quenched by addition of saturated aqueous NH Cl. The mixture was extracted with Et2O. The combined organic extracts were washed with water. The mixture was dried over Na2SO4. The mixture was filtered. The filtrate was concentrated at reduced pressure. The residue was chromatographed [silica, ethyl acetate/hexanes (1:19)] affording a viscous, colorless liquid (21.53 g, 96%): 1H NMR δ 1.84-1.93 (m, 1H), 1.96-2.03 (m, 2H), 2.07-2.15 (m, 1H), 2.78-2.93 (m, 4H), 3.34 (s, 3H), 3.51-3.55 (m, 4H), 4.19 (t, J=6.9 Hz, 1H); 13C NMR δ 26.16, 30.40, 35.58, 44.16, 58.84, 68.92; EI-MS: 178 (M+), 146, 133, 119/121, 71/73, 45. to warm overnight to room temperature The reaction was quenched by addition of saturated aqueous NH Cl The mixture was extracted with Et2O The combined organic extracts were washed with water The mixture was dried over Na2SO4 The mixture was filtered The filtrate was concentrated at reduced pressure The residue was chromatographed [silica, ethyl acetate/hexanes (1:19)]