ethyl 2,4,4,4-tetrafluoro-3-oxobutanoate

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Ammonia is introduced with stirring into a solution of 7.5 g of ethyl 3-oxo-2,4,4,4-tetrafluorobutyrate in 20 ml of toluene at 75° C. up to saturation. Then the reaction mixture is heated using a water separator for 5 hours, during which ethyl 3-amino-2,4,4,4-tetrafluorocrotonate is formed as an intermediate. Then the reaction mixture is heated for 5 hours

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Ethyl 2,4,4,4-tetrafluoro-3-oxobutanoate (81 g.) in toluene (60 ml) was stirred and heated to 70° C. whereupon ammonia gas was bubbled in until an uptake of 6.8 g. was recorded. The reaction was then set for reflux and water removed azeotropically. Approximately 10 ml of water was removed. After cooling, the solvent was removed under reduced pressure and the residue distilled to give ethyl 3-amino-2,4,4,4-tetrafluoro-2-butenoate b.p. 79°-86° C./20 mm, 44 g. was bubbled in until an uptake of 6.8 g for reflux water removed azeotropically Approximately 10 ml of water was removed After cooling the solvent was removed under reduced pressure the residue distilled

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Ammonia is introduced with stirring into a solution of 7.5 g of ethyl 3-oxo-2,4,4,4-tetrafluorobutyrate in 20 ml of toluene at 75° C. up to saturation. Then the reaction mixture is heated using a water separator for 5 hours, during which ethyl 3-amino-2,4,4,4-tetrafluorocrotonate is formed as an intermediate. Then the reaction mixture is heated for 5 hours

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Ammonia is introduced with stirring into a solution of 7.5 g of ethyl 3-oxo-2,4,4,4-tetrafluorobutyrate in 20 ml of toluene at 75° C. up to saturation. Then the reaction mixture is heated using a water separator for 5 hours, during which ethyl 3-amino-2,4,4,4-tetrafluorocrotonate is formed as an intermediate. Then the reaction mixture is heated for 5 hours

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Ethyl 2,4,4,4-tetrafluoro-3-oxobutanoate (81 g.) in toluene (60 ml) was stirred and heated to 70° C. whereupon ammonia gas was bubbled in until an uptake of 6.8 g. was recorded. The reaction was then set for reflux and water removed azeotropically. Approximately 10 ml of water was removed. After cooling, the solvent was removed under reduced pressure and the residue distilled to give ethyl 3-amino-2,4,4,4-tetrafluoro-2-butenoate b.p. 79°-86° C./20 mm, 44 g. was bubbled in until an uptake of 6.8 g for reflux water removed azeotropically Approximately 10 ml of water was removed After cooling the solvent was removed under reduced pressure the residue distilled

Conditions: temp:0.00; pressure:0.00; stir: