2-bromo-1-(3,5-difluorophenyl)ethanone

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

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

Procedure: The title compound was prepared according to the procedure described in step 3 of Example 1 from 4-chloro-2-(ethoxycarbonylamino)benzonitrile (Example 1, step 1) and 2-bromo-3′,5′-difluoroacetophenone (prepared according to the method of S. Kajigaeshi et al., Bull.Chem.Soc.Jpn., 1987, 60, 1159-1160). prepared

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

Procedure: To a solution of 3′,5′-difluoroacetophenone (3 g, 19.2 mmol) (Lancaster Synthesis) in dioxane (30 mL) was added dropwise a solution of bromine (3.67 g, 23 mmol) in dioxane (75 mL). After stirring for 10 minutes, the mixture was concentrated in vacuo and the residue was purified by flash chromatography, with 10:2 hexanes/dichloromethane as an eluant, to provide 2-bromo-1-(3,5-difluorophenyl)ethanone as a colorless oil (2.9 g, 64% yield). the mixture was concentrated in vacuo the residue was purified by flash chromatography, with 10:2 hexanes/dichloromethane as an eluant

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

Procedure: The title compound was prepared according to the procedure described in step 3 of Example 1 from 4-chloro-2-(ethoxycarbonylamino)benzonitrile (Example 1, step 1) and 2-bromo-3′,5′-difluoroacetophenone (prepared according to the method of S. Kajigaeshi et al., Bull.Chem.Soc.Jpn., 1987, 60, 1159-1160). prepared

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

Procedure: To a solution of 3′,5′-difluoroacetophenone (3 g, 19.2 mmol) (Lancaster Synthesis) in dioxane (30 mL) was added dropwise a solution of bromine (3.67 g, 23 mmol) in dioxane (75 mL). After stirring for 10 minutes, the mixture was concentrated in vacuo and the residue was purified by flash chromatography, with 10:2 hexanes/dichloromethane as an eluant, to provide 2-bromo-1-(3,5-difluorophenyl)ethanone as a colorless oil (2.9 g, 64% yield). the mixture was concentrated in vacuo the residue was purified by flash chromatography, with 10:2 hexanes/dichloromethane as an eluant

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

Procedure: To a solution of 3′,5′-difluoroacetophenone (3 g, 19.2 mmol) (Lancaster Synthesis) in dioxane (30 mL) was added dropwise a solution of bromine (3.67 g, 23 mmol) in dioxane (75 mL). After stirring for 10 minutes, the mixture was concentrated in vacuo and the residue was purified by flash chromatography, with 10:2 hexanes/dichloromethane as an eluant, to provide 2-bromo-1-(3,5-difluorophenyl)ethanone as a colorless oil (2.9 g, 64% yield). the mixture was concentrated in vacuo the residue was purified by flash chromatography, with 10:2 hexanes/dichloromethane as an eluant

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

Procedure: To a solution of 3′,5′-difluoroacetophenone (3 g, 19.2 mmol) (Lancaster Synthesis) in dioxane (30 mL) was added dropwise a solution of bromine (3.67 g, 23 mmol) in dioxane (75 mL). After stirring for 10 minutes, the mixture was concentrated in vacuo and the residue was purified by flash chromatography, with 10:2 hexanes/dichloromethane as an eluant, to provide 2-bromo-1-(3,5-difluorophenyl)ethanone as a colorless oil (2.9 g, 64% yield). the mixture was concentrated in vacuo the residue was purified by flash chromatography, with 10:2 hexanes/dichloromethane as an eluant

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

Procedure: To a solution of 3′,5′-difluoroacetophenone (3 g, 19.2 mmol) (Lancaster Synthesis) in dioxane (30 mL) was added dropwise a solution of bromine (3.67 g, 23 mmol) in dioxane (75 mL). After stirring for 10 minutes, the mixture was concentrated in vacuo and the residue was purified by flash chromatography, with 10:2 hexanes/dichloromethane as an eluant, to provide 2-bromo-1-(3,5-difluorophenyl)ethanone as a colorless oil (2.9 g, 64% yield). the mixture was concentrated in vacuo the residue was purified by flash chromatography, with 10:2 hexanes/dichloromethane as an eluant

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

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

Procedure: To a solution of 3′,5′-difluoroacetophenone (3 g, 19.2 mmol) (Lancaster Synthesis) in dioxane (30 mL) was added dropwise a solution of bromine (3.67 g, 23 mmol) in dioxane (75 mL). After stirring for 10 minutes, the mixture was concentrated in vacuo and the residue was purified by flash chromatography, with 10:2 hexanes/dichloromethane as an eluant, to provide 2-bromo-1-(3,5-difluorophenyl)ethanone as a colorless oil (2.9 g, 64% yield). the mixture was concentrated in vacuo the residue was purified by flash chromatography, with 10:2 hexanes/dichloromethane as an eluant

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

Procedure: To a solution of 3′,5′-difluoroacetophenone (3 g, 19.2 mmol) (Lancaster Synthesis) in dioxane (30 mL) was added dropwise a solution of bromine (3.67 g, 23 mmol) in dioxane (75 mL). After stirring for 10 minutes, the mixture was concentrated in vacuo and the residue was purified by flash chromatography, with 10:2 hexanes/dichloromethane as an eluant, to provide 2-bromo-1-(3,5-difluorophenyl)ethanone as a colorless oil (2.9 g, 64% yield). the mixture was concentrated in vacuo the residue was purified by flash chromatography, with 10:2 hexanes/dichloromethane as an eluant

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

Procedure: The title compound was synthesized in analogy to Example 68, using 3-oxo-butyric acid methyl ester as compound of formula R, 2-bromo-1-(3,5-difluoro-phenyl)-ethanone as compound of formula S, phenethylamine as R3—(CH2)m—NH2 and 3,3,3-trifluoro-N-propylamine as R1R2NH, MS (ISP) 437.2 (M+H)+.