1-溴-2-(2-溴乙磺酰基)乙烷

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A slurry of NaH (71.4 mg, 1.79 mmol, 60% dispersion) in DMSO (3 mL) and THF (1 mL) was treated with solid (4-nitro-phenyl)-acetonitrile (121 mg, 0.744 mmol) and stirred at RT for 3 min. A solution of 1-bromo-2-(2-bromoethanesulfonyl)-ethane (250 mg, 0.893 mmol) in THF (3 mL) was added, and the mixture was heated to 70° C. for 1.5 h. The mixture was partitioned between EtOAc (100 mL) and water (75 mL), and brine (25 mL) was added. The aqueous layer was extracted with EtOAc (1×50 mL). The combined organic layers were dried over MgSO4 and concentrated in vacuo. Silica gel chromatography of the residue on a 20-g Isolute SPE column with 10-50% EtOAc-hexane afforded the title compound (205 mg, 98%) as a white solid. 1H-NMR (CDCl3; 400 MHz): δ 8.33 (d, 2H, J=8.8 Hz), 7.75 (d, 2H, J=8.8 Hz), 3.64-3.52 (m, 2H), 3.29-3.19 (m, 2H), 2.88-2.76 (m, 2H), 2.54-2.44 (m, 2H). the mixture was heated to 70° C. for 1.5 h The mixture was partitioned between EtOAc (100 mL) and water (75 mL), and brine (25 mL) was added The aqueous layer was extracted with EtOAc (1×50 mL) The combined organic layers were dried over MgSO4 concentrated in vacuo

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 10 mmol of compound 5c, 10 mmol of 1-bromo-2-(2-bromo-ethanesulfonyl)-ethane and 30 mmol of potassium carbonate in 30 ml of dimethylformamide is stirred at RT. After 18 h, the mixture is poured into water (150 ml) and subsequently extracted with ethyl acetate. Crystallisation from diethyl ether. M. p. 165-166° C. subsequently extracted with ethyl acetate Crystallisation from diethyl ether

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A slurry of NaH (71.4 mg, 1.79 mmol, 60% dispersion) in DMSO (3 mL) and THF (1 mL) was treated with solid (4-nitro-phenyl)-acetonitrile (121 mg, 0.744 mmol) and stirred at RT for 3 min. A solution of 1-bromo-2-(2-bromoethanesulfonyl)-ethane (250 mg, 0.893 mmol) in THF (3 mL) was added, and the mixture was heated to 70° C. for 1.5 h. The mixture was partitioned between EtOAc (100 mL) and water (75 mL), and brine (25 mL) was added. The aqueous layer was extracted with EtOAc (1×50 mL). The combined organic layers were dried over MgSO4 and concentrated in vacuo. Silica gel chromatography of the residue on a 20-g Isolute SPE column with 10-50% EtOAc-hexane afforded the title compound (205 mg, 98%) as a white solid. 1H-NMR (CDCl3; 400 MHz): δ 8.33 (d, 2H, J=8.8 Hz), 7.75 (d, 2H, J=8.8 Hz), 3.64-3.52 (m, 2H), 3.29-3.19 (m, 2H), 2.88-2.76 (m, 2H), 2.54-2.44 (m, 2H). the mixture was heated to 70° C. for 1.5 h The mixture was partitioned between EtOAc (100 mL) and water (75 mL), and brine (25 mL) was added The aqueous layer was extracted with EtOAc (1×50 mL) The combined organic layers were dried over MgSO4 concentrated in vacuo

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A slurry of NaH (71.4 mg, 1.79 mmol, 60% dispersion) in DMSO (3 mL) and THF (1 mL) was treated with solid (4-nitro-phenyl)-acetonitrile (121 mg, 0.744 mmol) and stirred at RT for 3 min. A solution of 1-bromo-2-(2-bromoethanesulfonyl)-ethane (250 mg, 0.893 mmol) in THF (3 mL) was added, and the mixture was heated to 70° C. for 1.5 h. The mixture was partitioned between EtOAc (100 mL) and water (75 mL), and brine (25 mL) was added. The aqueous layer was extracted with EtOAc (1×50 mL). The combined organic layers were dried over MgSO4 and concentrated in vacuo. Silica gel chromatography of the residue on a 20-g Isolute SPE column with 10-50% EtOAc-hexane afforded the title compound (205 mg, 98%) as a white solid. 1H-NMR (CDCl3; 400 MHz): δ 8.33 (d, 2H, J=8.8 Hz), 7.75 (d, 2H, J=8.8 Hz), 3.64-3.52 (m, 2H), 3.29-3.19 (m, 2H), 2.88-2.76 (m, 2H), 2.54-2.44 (m, 2H). the mixture was heated to 70° C. for 1.5 h The mixture was partitioned between EtOAc (100 mL) and water (75 mL), and brine (25 mL) was added The aqueous layer was extracted with EtOAc (1×50 mL) The combined organic layers were dried over MgSO4 concentrated in vacuo

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A slurry of NaH (71.4 mg, 1.79 mmol, 60% dispersion) in DMSO (3 mL) and THF (1 mL) was treated with solid (4-nitro-phenyl)-acetonitrile (121 mg, 0.744 mmol) and stirred at RT for 3 min. A solution of 1-bromo-2-(2-bromoethanesulfonyl)-ethane (250 mg, 0.893 mmol) in THF (3 mL) was added, and the mixture was heated to 70° C. for 1.5 h. The mixture was partitioned between EtOAc (100 mL) and water (75 mL), and brine (25 mL) was added. The aqueous layer was extracted with EtOAc (1×50 mL). The combined organic layers were dried over MgSO4 and concentrated in vacuo. Silica gel chromatography of the residue on a 20-g Isolute SPE column with 10-50% EtOAc-hexane afforded the title compound (205 mg, 98%) as a white solid. 1H-NMR (CDCl3; 400 MHz): δ 8.33 (d, 2H, J=8.8 Hz), 7.75 (d, 2H, J=8.8 Hz), 3.64-3.52 (m, 2H), 3.29-3.19 (m, 2H), 2.88-2.76 (m, 2H), 2.54-2.44 (m, 2H). the mixture was heated to 70° C. for 1.5 h The mixture was partitioned between EtOAc (100 mL) and water (75 mL), and brine (25 mL) was added The aqueous layer was extracted with EtOAc (1×50 mL) The combined organic layers were dried over MgSO4 concentrated in vacuo

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 10 mmol of compound 5c, 10 mmol of 1-bromo-2-(2-bromo-ethanesulfonyl)-ethane and 30 mmol of potassium carbonate in 30 ml of dimethylformamide is stirred at RT. After 18 h, the mixture is poured into water (150 ml) and subsequently extracted with ethyl acetate. Crystallisation from diethyl ether. M. p. 165-166° C. subsequently extracted with ethyl acetate Crystallisation from diethyl ether

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A slurry of NaH (71.4 mg, 1.79 mmol, 60% dispersion) in DMSO (3 mL) and THF (1 mL) was treated with solid (4-nitro-phenyl)-acetonitrile (121 mg, 0.744 mmol) and stirred at RT for 3 min. A solution of 1-bromo-2-(2-bromoethanesulfonyl)-ethane (250 mg, 0.893 mmol) in THF (3 mL) was added, and the mixture was heated to 70° C. for 1.5 h. The mixture was partitioned between EtOAc (100 mL) and water (75 mL), and brine (25 mL) was added. The aqueous layer was extracted with EtOAc (1×50 mL). The combined organic layers were dried over MgSO4 and concentrated in vacuo. Silica gel chromatography of the residue on a 20-g Isolute SPE column with 10-50% EtOAc-hexane afforded the title compound (205 mg, 98%) as a white solid. 1H-NMR (CDCl3; 400 MHz): δ 8.33 (d, 2H, J=8.8 Hz), 7.75 (d, 2H, J=8.8 Hz), 3.64-3.52 (m, 2H), 3.29-3.19 (m, 2H), 2.88-2.76 (m, 2H), 2.54-2.44 (m, 2H). the mixture was heated to 70° C. for 1.5 h The mixture was partitioned between EtOAc (100 mL) and water (75 mL), and brine (25 mL) was added The aqueous layer was extracted with EtOAc (1×50 mL) The combined organic layers were dried over MgSO4 concentrated in vacuo