(1E)-1-Ethoxy-4,4,5,5,5-pentafluoropent-1-en-3-one

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

实验步骤: (E)-1-Ethoxy-4,4,5,5,5-pentafluoropent-1-en-3-one (1.09 g, 5 mmol) in anhydrous ethyl ether (5 mL) was treated with 1-((E)-3-methylthiobut-1-enyl)pyrrolidine (0.85 g, 5 mmol) in 2 mL dry ether at −15° C. over a period of 5 min and the reaction was continued for 20 min Then the temperature was allowed to rise to room temperature and the reaction continued for 3 h. The solvent was removed under reduced pressure and the residue re-dissolved in anhydrous DMF (5 mL). Ammonium acetate (0.58 g, 7.5 mmol) was added and the mixture stirred at room temperature over a weekend. Water was added and mixture extracted with ether three times. The combined organic layer was washed with brine, dried over anhydrous Na2SO4, filtered, concentrated, and purified on silica gel eluted with 8% EtOAc in hexane (v/v) to give 0.16 g of the desired 5-(1-methylthioethyl)-2-pentafluoroethylpyridine (A) as brownish colored oil in 12% yield. GC-MS: mass calcd for C10H11F2N3S [M]+ 271. Found 271. to rise to room temperature the reaction continued for 3 h The solvent was removed under reduced pressure the residue re-dissolved in anhydrous DMF (5 mL) mixture extracted with ether three times The combined organic layer was washed with brine dried over anhydrous Na2SO4 filtered concentrated purified on silica gel eluted with 8% EtOAc in hexane (v/v)

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

实验步骤: (E)-1-Ethoxy-4,4,5,5,5-pentafluoropent-1-en-3-one (1.09 g, 5 mmol) in anhydrous ethyl ether (5 mL) was treated with 1-((E)-3-methylthiobut-1-enyl)pyrrolidine (0.85 g, 5 mmol) in 2 mL dry ether at −15° C. over a period of 5 min and the reaction was continued for 20 min Then the temperature was allowed to rise to room temperature and the reaction continued for 3 h. The solvent was removed under reduced pressure and the residue re-dissolved in anhydrous DMF (5 mL). Ammonium acetate (0.58 g, 7.5 mmol) was added and the mixture stirred at room temperature over a weekend. Water was added and mixture extracted with ether three times. The combined organic layer was washed with brine, dried over anhydrous Na2SO4, filtered, concentrated, and purified on silica gel eluted with 8% EtOAc in hexane (v/v) to give 0.16 g of the desired 5-(1-methylthioethyl)-2-pentafluoroethylpyridine (A) as brownish colored oil in 12% yield. GC-MS: mass calcd for C10H11F2N3S [M]+ 271. Found 271. to rise to room temperature the reaction continued for 3 h The solvent was removed under reduced pressure the residue re-dissolved in anhydrous DMF (5 mL) mixture extracted with ether three times The combined organic layer was washed with brine dried over anhydrous Na2SO4 filtered concentrated purified on silica gel eluted with 8% EtOAc in hexane (v/v)

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

实验步骤: (E)-1-Ethoxy-4,4,5,5,5-pentafluoropent-1-en-3-one (1.09 g, 5 mmol) in anhydrous ethyl ether (5 mL) was treated with 1-((E)-3-methylthiobut-1-enyl)pyrrolidine (0.85 g, 5 mmol) in 2 mL dry ether at −15° C. over a period of 5 min and the reaction was continued for 20 min. Then the temperature was allowed to rise to room temperature and the reaction continued for 3 h. The solvent was removed under reduced pressure and the residue re-dissolved in anhydrous DMF (5 mL). Ammonium acetate (0.58 g, 7.5 mmol) was added and the mixture stirred at room temperature over a weekend. Water was added and mixture extracted with ether three times. The combined organic layer was washed with brine, dried over anhydrous Na2SO4, filtered, concentrated, and purified on silica gel eluted with 8% EtOAc in hexane (v/v) to give 0.16 g of the desired 5-(1-methylthioethyl)-2-pentafluoroethylpyridine (A) as brownish colored oil in 12% yield. GC-MS: mass calcd for C10H11F2N3S [M]+ 271. Found 271. to rise to room temperature the reaction continued for 3 h The solvent was removed under reduced pressure the residue re-dissolved in anhydrous DMF (5 mL) mixture extracted with ether three times The combined organic layer was washed with brine dried over anhydrous Na2SO4 filtered concentrated purified on silica gel eluted with 8% EtOAc in hexane (v/v)

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

实验步骤: (E)-1-Ethoxy-4,4,5,5,5-pentafluoropent-1-en-3-one (1.09 g, 5 mmol) in anhydrous ethyl ether (5 mL) was treated with 1-((E)-3-methylthiobut-1-enyl)pyrrolidine (0.85 g, 5 mmol) in 2 mL dry ether at −15° C. over a period of 5 min and the reaction was continued for 20 min. Then the temperature was allowed to rise to room temperature and the reaction continued for 3 h. The solvent was removed under reduced pressure and the residue re-dissolved in anhydrous DMF (5 mL). Ammonium acetate (0.58 g, 7.5 mmol) was added and the mixture stirred at room temperature over a weekend. Water was added and mixture extracted with ether three times. The combined organic layer was washed with brine, dried over anhydrous Na2SO4, filtered, concentrated, and purified on silica gel eluted with 8% EtOAc in hexane (v/v) to give 0.16 g of the desired 5-(1-methylthioethyl)-2-pentafluoroethylpyridine (A) as brownish colored oil in 12% yield. GC-MS: mass calcd for C10H11F2N3S [M]+ 271. Found 271. to rise to room temperature the reaction continued for 3 h The solvent was removed under reduced pressure the residue re-dissolved in anhydrous DMF (5 mL) mixture extracted with ether three times The combined organic layer was washed with brine dried over anhydrous Na2SO4 filtered concentrated purified on silica gel eluted with 8% EtOAc in hexane (v/v)

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

实验步骤: (E)-1-Ethoxy-4,4,5,5,5-pentafluoropent-1-en-3-one (1.09 g, 5 mmol) in anhydrous ethyl ether (5 mL) was treated with 1-((E)-3-methylthiobut-1-enyl)pyrrolidine (0.85 g, 5 mmol) in 2 mL dry ether at −15° C. over a period of 5 min and the reaction was continued for 20 min Then the temperature was allowed to rise to room temperature and the reaction continued for 3 h. The solvent was removed under reduced pressure and the residue re-dissolved in anhydrous DMF (5 mL). Ammonium acetate (0.58 g, 7.5 mmol) was added and the mixture stirred at room temperature over a weekend. Water was added and mixture extracted with ether three times. The combined organic layer was washed with brine, dried over anhydrous Na2SO4, filtered, concentrated, and purified on silica gel eluted with 8% EtOAc in hexane (v/v) to give 0.16 g of the desired 5-(1-methylthioethyl)-2-pentafluoroethylpyridine (A) as brownish colored oil in 12% yield. GC-MS: mass calcd for C10H11F2N3S [M]+ 271. Found 271. to rise to room temperature the reaction continued for 3 h The solvent was removed under reduced pressure the residue re-dissolved in anhydrous DMF (5 mL) mixture extracted with ether three times The combined organic layer was washed with brine dried over anhydrous Na2SO4 filtered concentrated purified on silica gel eluted with 8% EtOAc in hexane (v/v)

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

实验步骤: (E)-1-Ethoxy-4,4,5,5,5-pentafluoropent-1-en-3-one (1.09 g, 5 mmol) in anhydrous ethyl ether (5 mL) was treated with 1-((E)-3-methylthiobut-1-enyl)pyrrolidine (0.85 g, 5 mmol) in 2 mL dry ether at −15° C. over a period of 5 min and the reaction was continued for 20 min Then the temperature was allowed to rise to room temperature and the reaction continued for 3 h. The solvent was removed under reduced pressure and the residue re-dissolved in anhydrous DMF (5 mL). Ammonium acetate (0.58 g, 7.5 mmol) was added and the mixture stirred at room temperature over a weekend. Water was added and mixture extracted with ether three times. The combined organic layer was washed with brine, dried over anhydrous Na2SO4, filtered, concentrated, and purified on silica gel eluted with 8% EtOAc in hexane (v/v) to give 0.16 g of the desired 5-(1-methylthioethyl)-2-pentafluoroethylpyridine (A) as brownish colored oil in 12% yield. GC-MS: mass calcd for C10H11F2N3S [M]+ 271. Found 271. to rise to room temperature the reaction continued for 3 h The solvent was removed under reduced pressure the residue re-dissolved in anhydrous DMF (5 mL) mixture extracted with ether three times The combined organic layer was washed with brine dried over anhydrous Na2SO4 filtered concentrated purified on silica gel eluted with 8% EtOAc in hexane (v/v)

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

实验步骤: (E)-1-Ethoxy-4,4,5,5,5-pentafluoropent-1-en-3-one (1.09 g, 5 mmol) in anhydrous ethyl ether (5 mL) was treated with 1-((E)-3-methylthiobut-1-enyl)pyrrolidine (0.85 g, 5 mmol) in 2 mL dry ether at −15° C. over a period of 5 min and the reaction was continued for 20 min. Then the temperature was allowed to rise to room temperature and the reaction continued for 3 h. The solvent was removed under reduced pressure and the residue re-dissolved in anhydrous DMF (5 mL). Ammonium acetate (0.58 g, 7.5 mmol) was added and the mixture stirred at room temperature over a weekend. Water was added and mixture extracted with ether three times. The combined organic layer was washed with brine, dried over anhydrous Na2SO4, filtered, concentrated, and purified on silica gel eluted with 8% EtOAc in hexane (v/v) to give 0.16 g of the desired 5-(1-methylthioethyl)-2-pentafluoroethylpyridine (A) as brownish colored oil in 12 percent yield. GC-MS: mass calcd for C10H11F2N3S [M]+ 271. Found 271. to rise to room temperature the reaction continued for 3 h The solvent was removed under reduced pressure the residue re-dissolved in anhydrous DMF (5 mL) mixture extracted with ether three times The combined organic layer was washed with brine dried over anhydrous Na2SO4 filtered concentrated purified on silica gel eluted with 8% EtOAc in hexane (v/v)

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

实验步骤: (E)-1-Ethoxy-4,4,5,5,5-pentafluoropent-1-en-3-one (1.09 g, 5 mmol) in anhydrous ethyl ether (5 mL) was treated with 1-((E)-3-methylthiobut-1-enyl)pyrrolidine (0.85 g, 5 mmol) in 2 mL dry ether at −15° C. over a period of 5 min and the reaction was continued for 20 min. Then the temperature was allowed to rise to room temperature and the reaction continued for 3 h. The solvent was removed under reduced pressure and the residue re-dissolved in anhydrous DMF (5 mL). Ammonium acetate (0.58 g, 7.5 mmol) was added and the mixture stirred at room temperature over a weekend. Water was added and mixture extracted with ether three times. The combined organic layer was washed with brine, dried over anhydrous Na2SO4, filtered, concentrated, and purified on silica gel eluted with 8% EtOAc in hexane (v/v) to give 0.16 g of the desired 5-(1-methylthioethyl)-2-pentafluoroethylpyridine (A) as brownish colored oil in 12 percent yield. GC-MS: mass calcd for C10H11F2N3S [M]+ 271. Found 271. to rise to room temperature the reaction continued for 3 h The solvent was removed under reduced pressure the residue re-dissolved in anhydrous DMF (5 mL) mixture extracted with ether three times The combined organic layer was washed with brine dried over anhydrous Na2SO4 filtered concentrated purified on silica gel eluted with 8% EtOAc in hexane (v/v)

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

实验步骤: (E)-1-Ethoxy-4,4,5,5,5-pentafluoropent-1-en-3-one (1.09 g, 5 mmol) in anhydrous ethyl ether (5 mL) was treated with 1-((E)-3-methylthiobut-1-enyl)pyrrolidine (0.85 g, 5 mmol) in 2 mL dry ether at −15° C. over a period of 5 min and the reaction was continued for 20 min. Then the temperature was allowed to rise to room temperature and the reaction continued for 3 h. The solvent was removed under reduced pressure and the residue re-dissolved in anhydrous DMF (5 mL). Ammonium acetate (0.58 g, 7.5 mmol) was added and the mixture stirred at room temperature over a weekend. Water was added and mixture extracted with ether three times. The combined organic layer was washed with brine, dried over anhydrous Na2SO4, filtered, concentrated, and purified on silica gel eluted with 8% EtOAc in hexane (v/v) to give 0.16 g of the desired 5-(1-methylthioethyl)-2-pentafluoroethylpyridine (A) as brownish colored oil in 12 percent yield. GC-MS: mass calcd for C10H11F2N3S [M]+ 271. Found 271. to rise to room temperature the reaction continued for 3 h The solvent was removed under reduced pressure the residue re-dissolved in anhydrous DMF (5 mL) mixture extracted with ether three times The combined organic layer was washed with brine dried over anhydrous Na2SO4 filtered concentrated purified on silica gel eluted with 8% EtOAc in hexane (v/v)

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

实验步骤: (E)-1-Ethoxy-4,4,5,5,5-pentafluoropent-1-en-3-one (1.09 g, 5 mmol) in anhydrous ethyl ether (5 mL) was treated with 1-((E)-3-methylthiobut-1-enyl)pyrrolidine (0.85 g, 5 mmol) in 2 mL dry ether at −15° C. over a period of 5 min and the reaction was continued for 20 min. Then the temperature was allowed to rise to room temperature and the reaction continued for 3 h. The solvent was removed under reduced pressure and the residue re-dissolved in anhydrous DMF (5 mL). Ammonium acetate (0.58 g, 7.5 mmol) was added and the mixture stirred at room temperature over a weekend. Water was added and mixture extracted with ether three times. The combined organic layer was washed with brine, dried over anhydrous Na2SO4, filtered, concentrated, and purified on silica gel eluted with 8% EtOAc in hexane (v/v) to give 0.16 g of the desired 5-(1-methylthioethyl)-2-pentafluoroethylpyridine (A) as brownish colored oil in 12% yield. GC-MS: mass calcd for C10H11F2N3S [M]+271. Found 271. to rise to room temperature the reaction continued for 3 h The solvent was removed under reduced pressure the residue re-dissolved in anhydrous DMF (5 mL) mixture extracted with ether three times The combined organic layer was washed with brine dried over anhydrous Na2SO4 filtered concentrated purified on silica gel eluted with 8% EtOAc in hexane (v/v)

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

实验步骤: (E)-1-Ethoxy-4,4,5,5,5-pentafluoropent-1-en-3-one (1.09 g, 5 mmol) in anhydrous ethyl ether (5 mL) was treated with 1-((E)-3-methylthiobut-1-enyl)pyrrolidine (0.85 g, 5 mmol) in 2 mL dry ether at −15° C. over a period of 5 min and the reaction was continued for 20 min. Then the temperature was allowed to rise to room temperature and the reaction continued for 3 h. The solvent was removed under reduced pressure and the residue re-dissolved in anhydrous DMF (5 mL). Ammonium acetate (0.58 g, 7.5 mmol) was added and the mixture stirred at room temperature over a weekend. Water was added and mixture extracted with ether three times. The combined organic layer was washed with brine, dried over anhydrous Na2SO4, filtered, concentrated, and purified on silica gel eluted with 8% EtOAc in hexane (v/v) to give 0.16 g of the desired 5-(1-methylthioethyl)-2-pentafluoroethylpyridine (A) as brownish colored oil in 12% yield. GC-MS: mass calcd for C10H11F2N3S [M]+271. Found 271. to rise to room temperature the reaction continued for 3 h The solvent was removed under reduced pressure the residue re-dissolved in anhydrous DMF (5 mL) mixture extracted with ether three times The combined organic layer was washed with brine dried over anhydrous Na2SO4 filtered concentrated purified on silica gel eluted with 8% EtOAc in hexane (v/v)

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

实验步骤: (E)-1-Ethoxy-4,4,5,5,5-pentafluoropent-1-en-3-one (1.09 g, 5 mmol) in anhydrous ethyl ether (5 mL) was treated with 1-((E)-3-methylthiobut-1-enyl)pyrrolidine (0.85 g, 5 mmol) in 2 mL dry ether at −15° C. over a period of 5 min and the reaction was continued for 20 min. Then the temperature was allowed to rise to room temperature and the reaction continued for 3 h. The solvent was removed under reduced pressure and the residue re-dissolved in anhydrous DMF (5 mL). Ammonium acetate (0.58 g, 7.5 mmol) was added and the mixture stirred at room temperature over a weekend. Water was added and mixture extracted with ether three times. The combined organic layer was washed with brine, dried over anhydrous Na2SO4, filtered, concentrated, and purified on silica gel eluted with 8% EtOAc in hexane (v/v) to give 0.16 g of the desired 5-(1-methylthioethyl)-2-pentafluoroethylpyridine (A) as brownish colored oil in 12% yield. GC-MS: mass calcd for C10H11F2N3S [M]+ 271. Found 271. to rise to room temperature the reaction continued for 3 h The solvent was removed under reduced pressure the residue re-dissolved in anhydrous DMF (5 mL) mixture extracted with ether three times The combined organic layer was washed with brine dried over anhydrous Na2SO4 filtered concentrated purified on silica gel eluted with 8% EtOAc in hexane (v/v)