2-bromo-1-chloro-4-methoxybenzene

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

Procedure: To a solution of 2-bromo-1-chloro-4-methoxybenzene (4.42 g, 19.9 mmol) in THF stirring at −10° C. under nitrogen was added isopropylmagnesium chloride (9.9 mL, 19.9 mmol, 2M in THF). The reaction was allowed to warm to ambient temperature stirred for 4 hours. The reaction was cooled to −40° C. and zinc(II) chloride (19.9 mL, 19.9 mmol, 1M in ether) was added and the solution stirred for minutes. The reaction was cooled to −78° C. and sulfurothioyl dichloride (0.80 mL, 9.9 mmol) was added. After stirring for 15 minutes at −78° C., saturated NH4Cl was added and the mixture was warmed to ambient temperature and extracted multiple times with EtOAc. The combined organic layers were dried with sodium sulfate, filtered, and concentrated to give a residue which was purified by silica chromatography (10% EtOAc in hexanes) to afford the title compound (1.52 g, 21.9% yield). The reaction was cooled to −40° C. the solution stirred for minutes The reaction was cooled to −78° C. After stirring for 15 minutes at −78° C. the mixture was warmed to ambient temperature extracted multiple times with EtOAc The combined organic layers were dried with sodium sulfate filtered concentrated to give a residue which was purified by silica chromatography (10% EtOAc in hexanes)

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

Procedure: To a solution of 2-bromo-1-chloro-4-methoxybenzene (4.42 g, 19.9 mmol) in THF stirring at −10° C. under nitrogen was added isopropylmagnesium chloride (9.9 mL, 19.9 mmol, 2M in THF). The reaction was allowed to warm to ambient temperature stirred for 4 hours. The reaction was cooled to −40° C. and zinc(II) chloride (19.9 mL, 19.9 mmol, 1M in ether) was added and the solution stirred for 30 minutes. The reaction was cooled to −78° C. and sulfurothioyl dichloride (0.80 mL, 9.9 mmol) was added. After stirring for 15 minutes at −78° C., saturated NH4Cl was added and the mixture was warmed to ambient temperature and extracted multiple times with EtOAc. The combined organic layers were dried with sodium sulfate, filtered, and concentrated to give a residue which was purified by silica chromatography (10% EtOAc in hexanes) to afford the title compound (1.52 g, 21.9% yield). The reaction was cooled to −40° C. the solution stirred for 30 minutes The reaction was cooled to −78° C. After stirring for 15 minutes at −78° C. the mixture was warmed to ambient temperature extracted multiple times with EtOAc The combined organic layers were dried with sodium sulfate filtered concentrated to give a residue which was purified by silica chromatography (10% EtOAc in hexanes)

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

Procedure: The 2-bromo-1-chloro-4-methoxybenzene (25.0 g, 113 mmol) [Oakwood cat#035670] was dissolved in carbon disulfide (250 mL), and the acetyl chloride (12 mL, 170 mmol) and aluminum trichloride (37.6 g, 282 mmol) were added. The reaction was heated to reflux and monitored by LC/MS. After heating for 1 h, the reaction became two layers. The reaction allowed to cool to room temperature and poured over ice. The slurry was extracted with ethyl acetate 3×, the combined organic layer was washed with brine, dried over magnesium sulfate and concentrated to give 1-(4-bromo-5-chloro-2-hydroxyphenyl)ethanone as a solid (28.0 g, 99%). 1H NMR (300 MHz, CDCl3) δ 12.12 (s, 1H), 7.78 (s, 1H), 7.31 (s, 1H), 2.62 (s, 3H). The reaction was heated to reflux After heating for 1 h poured over ice The slurry was extracted with ethyl acetate 3× the combined organic layer was washed with brine dried over magnesium sulfate concentrated

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

Procedure: The 2-bromo-1-chloro-4-methoxybenzene (25.0 g, 113 mmol) [Oakwood cat#035670] was dissolved in carbon disulfide (250 mL), and the acetyl chloride (12 mL, 170 mmol) and aluminum trichloride (37.6 g, 282 mmol) were added. The reaction was heated to reflux and monitored by LC/MS. After heating for 1 h, the reaction became two layers. The reaction allowed to cool to room temperature and poured over ice. The slurry was extracted with ethyl acetate 3×, the combined organic layer was washed with brine, dried over magnesium sulfate and concentrated to give 1-(4-bromo-5-chloro-2-hydroxyphenyl)ethanone as a solid (28.0 g, 99%). 1H NMR (300 MHz, CDCl3) δ 12.12 (s, 1H), 7.78 (s, 1H), 7.31 (s, 1H), 2.62 (s, 3H). The reaction was heated to reflux After heating for 1 h poured over ice The slurry was extracted with ethyl acetate 3× the combined organic layer was washed with brine dried over magnesium sulfate concentrated

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

Procedure: To a solution of 2-bromo-1-chloro-4-methoxybenzene (4.42 g, 19.9 mmol) in THF stirring at −10° C. under nitrogen was added isopropylmagnesium chloride (9.9 mL, 19.9 mmol, 2M in THF). The reaction was allowed to warm to ambient temperature stirred for 4 hours. The reaction was cooled to −40° C. and zinc(II) chloride (19.9 mL, 19.9 mmol, 1M in ether) was added and the solution stirred for minutes. The reaction was cooled to −78° C. and sulfurothioyl dichloride (0.80 mL, 9.9 mmol) was added. After stirring for 15 minutes at −78° C., saturated NH4Cl was added and the mixture was warmed to ambient temperature and extracted multiple times with EtOAc. The combined organic layers were dried with sodium sulfate, filtered, and concentrated to give a residue which was purified by silica chromatography (10% EtOAc in hexanes) to afford the title compound (1.52 g, 21.9% yield). The reaction was cooled to −40° C. the solution stirred for minutes The reaction was cooled to −78° C. After stirring for 15 minutes at −78° C. the mixture was warmed to ambient temperature extracted multiple times with EtOAc The combined organic layers were dried with sodium sulfate filtered concentrated to give a residue which was purified by silica chromatography (10% EtOAc in hexanes)

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

Procedure: To a solution of 2-bromo-1-chloro-4-methoxybenzene (4.42 g, 19.9 mmol) in THF stirring at −10° C. under nitrogen was added isopropylmagnesium chloride (9.9 mL, 19.9 mmol, 2M in THF). The reaction was allowed to warm to ambient temperature stirred for 4 hours. The reaction was cooled to −40° C. and zinc(II) chloride (19.9 mL, 19.9 mmol, 1M in ether) was added and the solution stirred for minutes. The reaction was cooled to −78° C. and sulfurothioyl dichloride (0.80 mL, 9.9 mmol) was added. After stirring for 15 minutes at −78° C., saturated NH4Cl was added and the mixture was warmed to ambient temperature and extracted multiple times with EtOAc. The combined organic layers were dried with sodium sulfate, filtered, and concentrated to give a residue which was purified by silica chromatography (10% EtOAc in hexanes) to afford the title compound (1.52 g, 21.9% yield). The reaction was cooled to −40° C. the solution stirred for minutes The reaction was cooled to −78° C. After stirring for 15 minutes at −78° C. the mixture was warmed to ambient temperature extracted multiple times with EtOAc The combined organic layers were dried with sodium sulfate filtered concentrated to give a residue which was purified by silica chromatography (10% EtOAc in hexanes)

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

Procedure: To a solution of 2-bromo-1-chloro-4-methoxybenzene (4.42 g, 19.9 mmol) in THF stirring at −10° C. under nitrogen was added isopropylmagnesium chloride (9.9 mL, 19.9 mmol, 2M in THF). The reaction was allowed to warm to ambient temperature stirred for 4 hours. The reaction was cooled to −40° C. and zinc(II) chloride (19.9 mL, 19.9 mmol, 1M in ether) was added and the solution stirred for minutes. The reaction was cooled to −78° C. and sulfurothioyl dichloride (0.80 mL, 9.9 mmol) was added. After stirring for 15 minutes at −78° C., saturated NH4Cl was added and the mixture was warmed to ambient temperature and extracted multiple times with EtOAc. The combined organic layers were dried with sodium sulfate, filtered, and concentrated to give a residue which was purified by silica chromatography (10% EtOAc in hexanes) to afford the title compound (1.52 g, 21.9% yield). The reaction was cooled to −40° C. the solution stirred for minutes The reaction was cooled to −78° C. After stirring for 15 minutes at −78° C. the mixture was warmed to ambient temperature extracted multiple times with EtOAc The combined organic layers were dried with sodium sulfate filtered concentrated to give a residue which was purified by silica chromatography (10% EtOAc in hexanes)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Tetrakistriphenylphosphinepalladium (0) (229 mg, 0.20 mmol) was added to a degassed mixture of 2-fluorophenylboronic acid (556 mg, 3.97 mmol), 2-bromo-1-chloro-4-methoxybenzene (0.49 mL, 3.57 mmol), caesium carbonate (3.87 g, 11.9 mmol), water (5.0 mL) and dioxane (26.0 mL). The reaction was heated at 80° C. for 18 hours, cooled to room temperature and then partitioned between ethyl acetate (30.0 mL) and sat. aq. ammonium chloride (10.0 mL). The aqueous phase was separated and extracted with ethyl acetate (2×10 mL). The combined organic phases were washed with brine (5.0 mL), dried over MgSO4, filtered and evaporated to give a pale yellow oil. Column chromatography purification on silica, eluting with heptanes gave the title compound (749 mg, 88%) as a colourless oil. cooled to room temperature partitioned between ethyl acetate (30.0 mL) and sat. aq. ammonium chloride (10.0 mL) The aqueous phase was separated extracted with ethyl acetate (2×10 mL) The combined organic phases were washed with brine (5.0 mL) dried over MgSO4 filtered evaporated to give a pale yellow oil Column chromatography purification on silica eluting with heptanes

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

Procedure: A round-bottom flask was charged with 3-bromo-4-chloroanisole (1.625 ml, 7.34 mmol), (3-fluorophenyl)boronic acid (1.129 g, 8.07 mmol), potassium carbonate (3.04 g, 22.01 mmol), and tetrakistriphenylphosphine palladium (0) (0.424 g, 0.367 mmol). The flask was flushed with Ar (g), then 1,4-dioxane (19.57 ml) and water (4.89 ml) were added. A reflux condenser was attached, and the flask was lowered into a 90° C. heating bath. After 2 h, the mixture was cooled, diluted with ethyl acetate, and washed with brine. The organic layer was dried over sodium sulfate, filtered, and concentrated. The residue was purified by chromatography on silica gel (80-g Redi-Sep Gold column, 0-10% EtOAc/Heptane) to give an oily solid as product that was used directly in the next step. m/z (ESI) 281.1 (M+H)+. The flask was flushed with Ar (g) 1,4-dioxane (19.57 ml) and water (4.89 ml) were added A reflux condenser was attached was lowered into a 90° C. heating bath the mixture was cooled diluted with ethyl acetate washed with brine The organic layer was dried over sodium sulfate filtered concentrated The residue was purified by chromatography on silica gel (80-g Redi-Sep Gold column, 0-10% EtOAc/Heptane) to give an oily solid as product that

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

Procedure: To a solution of 2-bromo-1-chloro-4-methoxybenzene (4.42 g, 19.9 mmol) in THF stirring at −10° C. under nitrogen was added isopropylmagnesium chloride (9.9 mL, 19.9 mmol, 2M in THF). The reaction was allowed to warm to ambient temperature stirred for 4 hours. The reaction was cooled to −40° C. and zinc(II) chloride (19.9 mL, 19.9 mmol, 1M in ether) was added and the solution stirred for 30 minutes. The reaction was cooled to −78° C. and sulfurothioyl dichloride (0.80 mL, 9.9 mmol) was added. After stirring for 15 minutes at −78° C., saturated NH4Cl was added and the mixture was warmed to ambient temperature and extracted multiple times with EtOAc. The combined organic layers were dried with sodium sulfate, filtered, and concentrated to give a residue which was purified by silica chromatography (10% EtOAc in hexanes) to afford the title compound (1.52 g, 21.9% yield). The reaction was cooled to −40° C. the solution stirred for 30 minutes The reaction was cooled to −78° C. After stirring for 15 minutes at −78° C. the mixture was warmed to ambient temperature extracted multiple times with EtOAc The combined organic layers were dried with sodium sulfate filtered concentrated to give a residue which was purified by silica chromatography (10% EtOAc in hexanes)

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

Procedure: The 2-bromo-1-chloro-4-methoxybenzene (25.0 g, 113 mmol) [Oakwood cat#035670] was dissolved in carbon disulfide (250 mL), and the acetyl chloride (12 mL, 170 mmol) and aluminum trichloride (37.6 g, 282 mmol) were added. The reaction was heated to reflux and monitored by LC/MS. After heating for 1 h, the reaction became two layers. The reaction allowed to cool to room temperature and poured over ice. The slurry was extracted with ethyl acetate 3×, the combined organic layer was washed with brine, dried over magnesium sulfate and concentrated to give 1-(4-bromo-5-chloro-2-hydroxyphenyl)ethanone as a solid (28.0 g, 99%). 1H NMR (300 MHz, CDCl3) δ 12.12 (s, 1H), 7.78 (s, 1H), 7.31 (s, 1H), 2.62 (s, 3H). The reaction was heated to reflux After heating for 1 h poured over ice The slurry was extracted with ethyl acetate 3× the combined organic layer was washed with brine dried over magnesium sulfate concentrated

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

Procedure: To a solution of 2-bromo-1-chloro-4-methoxybenzene (4.42 g, 19.9 mmol) in THF stirring at −10° C. under nitrogen was added isopropylmagnesium chloride (9.9 mL, 19.9 mmol, 2M in THF). The reaction was allowed to warm to ambient temperature stirred for 4 hours. The reaction was cooled to −40° C. and zinc(II) chloride (19.9 mL, 19.9 mmol, 1M in ether) was added and the solution stirred for minutes. The reaction was cooled to −78° C. and sulfurothioyl dichloride (0.80 mL, 9.9 mmol) was added. After stirring for 15 minutes at −78° C., saturated NH4Cl was added and the mixture was warmed to ambient temperature and extracted multiple times with EtOAc. The combined organic layers were dried with sodium sulfate, filtered, and concentrated to give a residue which was purified by silica chromatography (10% EtOAc in hexanes) to afford the title compound (1.52 g, 21.9% yield). The reaction was cooled to −40° C. the solution stirred for minutes The reaction was cooled to −78° C. After stirring for 15 minutes at −78° C. the mixture was warmed to ambient temperature extracted multiple times with EtOAc The combined organic layers were dried with sodium sulfate filtered concentrated to give a residue which was purified by silica chromatography (10% EtOAc in hexanes)