2-Bromo-1,3-dichloro-5-methoxybenzene

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

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

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A stirred mixture of 2.5 grams (0.0096 mole) of 1,3-dichloro-5-methoxy-2-bromobenzene (known compound), 0.18 mL (0.0096 mole) of 1-(α,α,α-trifluoro-meta-tolyl)piperazine (known compound), 0.18 gram (0.0002 mole) of tris(dibenzylideneacetone)dipalladium(0), 0.36 gram (0.0006 mole) of racemic-2,2′-bis(diphenylphosphono)-1,1′-binaphthyl, and 1.66 grams (0.017 mole) of sodium tert-butoxide in 100 mL of toluene was heated at 100° C. for about 60 hours. After this time, the reaction mixture was cooled and washed with two 10 mL portions of water. The organic layer was dried with sodium sulfate, filtered, and concentrated under reduced pressure to a residue. The residue was purified with column chromatography on silica gel using 1:3 and 1:1 mixtures of methylene chloride:hexane as eluants. The appropriate fractions were combined and concentrated under reduced pressure, yielding 2.1 grams of the subject compound, mp 87-89° C. The NMR spectrum was consistent with the proposed structure. After this time, the reaction mixture was cooled washed with two 10 mL portions of water The organic layer was dried with sodium sulfate filtered concentrated under reduced pressure to a residue The residue was purified with column chromatography on silica gel using 1:3 and 1:1 mixtures of methylene chloride concentrated under reduced pressure

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A stirred mixture of 2.5 grams (0.0096 mole) of 1,3-dichloro-5-methoxy-2-bromobenzene (known compound), 0.18 mL (0.0096 mole) of 1-(α,α,α-trifluoro-meta-tolyl)piperazine (known compound), 0.18 gram (0.0002 mole) of tris(dibenzylideneacetone)dipalladium(0), 0.36 gram (0.0006 mole) of racemic-2,2′-bis(diphenylphosphono)-1,1′-binaphthyl, and 1.66 grams (0.017 mole) of sodium tert-butoxide in 100 mL of toluene was heated at 100° C. for about 60 hours. After this time, the reaction mixture was cooled and washed with two 10 mL portions of water. The organic layer was dried with sodium sulfate, filtered, and concentrated under reduced pressure to a residue. The residue was purified with column chromatography on silica gel using 1:3 and 1:1 mixtures of methylene chloride:hexane as eluants. The appropriate fractions were combined and concentrated under reduced pressure, yielding 2.1 grams of the subject compound, mp 87-89° C. The NMR spectrum was consistent with the proposed structure. After this time, the reaction mixture was cooled washed with two 10 mL portions of water The organic layer was dried with sodium sulfate filtered concentrated under reduced pressure to a residue The residue was purified with column chromatography on silica gel using 1:3 and 1:1 mixtures of methylene chloride concentrated under reduced pressure

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A stirred mixture of 2.5 grams (0.0096 mole) of 1,3-dichloro-5-methoxy-2-bromobenzene (known compound), 0.18 mL (0.0096 mole) of 1-(α,α,α-trifluoro-meta-tolyl)piperazine (known compound), 0.18 gram (0.0002 mole) of tris(dibenzylideneacetone)dipalladium(0), 0.36 gram (0.0006 mole) of racemic-2,2′-bis(diphenylphosphono)-1,1′-binaphthyl, and 1.66 grams (0.017 mole) of sodium tert-butoxide in 100 mL of toluene was heated at 100° C. for about 60 hours. After this time, the reaction mixture was cooled and washed with two 10 mL portions of water. The organic layer was dried with sodium sulfate, filtered, and concentrated under reduced pressure to a residue. The residue was purified with column chromatography on silica gel using 1:3 and 1:1 mixtures of methylene chloride:hexane as eluants. The appropriate fractions were combined and concentrated under reduced pressure, yielding 2.1 grams of the subject compound, mp 87-89° C. The NMR spectrum was consistent with the proposed structure. After this time, the reaction mixture was cooled washed with two 10 mL portions of water The organic layer was dried with sodium sulfate filtered concentrated under reduced pressure to a residue The residue was purified with column chromatography on silica gel using 1:3 and 1:1 mixtures of methylene chloride concentrated under reduced pressure

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

Procedure: A stirred mixture of 3.0 grams (0.012 mole) of 2-bromo-1,3-dichloro-5-methoxybenzene (Step A), 2.7 grams (0.012 mole) of [5-(trifluoromethyl)-2-pyridylpiperazine (Step B), 0.02 gram (0.00024 mole) of tris(ydroxide eneacetone)dipalladium (0), 0.45 gram (0.00072 mole) of ydroxi-2,2′bis(diphenylphosphino)-1,1′-binaphthyl and 2.1 grains (0.022 mole) of sodium tert-butoxide in 150 mL of toluene was warmed to 80° C. where it was maintained during a 24-hour period. After this time the reaction mixture was cooled and poured into 250 mL of water. The organic layer was separated, and the aqueous layer was extracted with two 75 mL portions of diethyl ether. The organic layer and the extracts were combined and washed with 50 mL of an aqueous solution saturated with sodium chloride. The organic layer-extract combination was dried with sodium sulfate, filtered, and the filtrate was concentrated under reduced pressure to a residue. The residue, which was a mixture of products, was separated into its components by column chromatography on silica gel using 25% methylene chloride in hexane, then 50% methylene chloride in hexane as eluants. Appropriate fractions were combined and concentrated under reduced pressure, yielding 1.8 grams of 1,3-dichloro-5-methoxy-2-{4-[5-(trifluoromethyl)(2-pyridyl)]piperazinyl}benzene, and other appropriate fractions were combined and concentrated under reduced pressure, yielding 0.45 gram of 2-bromo-3-chloro-5-methoxy-1-{4-[5-(trifluoromethyl)(2-pyridyl)]piperazinyl}benzene. The NMR spectra of both compounds were consistent with the proposed structures. was maintained during a 24-hour period After this time the reaction mixture was cooled The organic layer was separated the aqueous layer was extracted with two 75 mL portions of diethyl ether washed with 50 mL of an aqueous solution saturated with sodium chloride The organic layer-extract combination was dried with sodium sulfate filtered the filtrate was concentrated under reduced pressure to a residue a mixture of products was separated into its components by column chromatography on silica gel using 25% methylene chloride in hexane concentrated under reduced pressure

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

Procedure: A stirred mixture of 3.0 grams (0.012 mole) of 2-bromo-1,3-dichloro-5-methoxybenzene (Step A), 2.7 grams (0.012 mole) of [5-(trifluoromethyl)-2-pyridylpiperazine (Step B), 0.02 gram (0.00024 mole) of tris(ydroxide eneacetone)dipalladium (0), 0.45 gram (0.00072 mole) of ydroxi-2,2′bis(diphenylphosphino)-1,1′-binaphthyl and 2.1 grains (0.022 mole) of sodium tert-butoxide in 150 mL of toluene was warmed to 80° C. where it was maintained during a 24-hour period. After this time the reaction mixture was cooled and poured into 250 mL of water. The organic layer was separated, and the aqueous layer was extracted with two 75 mL portions of diethyl ether. The organic layer and the extracts were combined and washed with 50 mL of an aqueous solution saturated with sodium chloride. The organic layer-extract combination was dried with sodium sulfate, filtered, and the filtrate was concentrated under reduced pressure to a residue. The residue, which was a mixture of products, was separated into its components by column chromatography on silica gel using 25% methylene chloride in hexane, then 50% methylene chloride in hexane as eluants. Appropriate fractions were combined and concentrated under reduced pressure, yielding 1.8 grams of 1,3-dichloro-5-methoxy-2-{4-[5-(trifluoromethyl)(2-pyridyl)]piperazinyl}benzene, and other appropriate fractions were combined and concentrated under reduced pressure, yielding 0.45 gram of 2-bromo-3-chloro-5-methoxy-1-{4-[5-(trifluoromethyl)(2-pyridyl)]piperazinyl}benzene. The NMR spectra of both compounds were consistent with the proposed structures. was maintained during a 24-hour period After this time the reaction mixture was cooled The organic layer was separated the aqueous layer was extracted with two 75 mL portions of diethyl ether washed with 50 mL of an aqueous solution saturated with sodium chloride The organic layer-extract combination was dried with sodium sulfate filtered the filtrate was concentrated under reduced pressure to a residue a mixture of products was separated into its components by column chromatography on silica gel using 25% methylene chloride in hexane concentrated under reduced pressure

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

Procedure: A stirred mixture of 3.0 grams (0.012 mole) of 2-bromo-1,3-dichloro-5-methoxybenzene (Step A), 2.7 grams (0.012 mole) of [5-(trifluoromethyl)-2-pyridylpiperazine (Step B), 0.02 gram (0.00024 mole) of tris(ydroxide eneacetone)dipalladium (0), 0.45 gram (0.00072 mole) of ydroxi-2,2′bis(diphenylphosphino)-1,1′-binaphthyl and 2.1 grains (0.022 mole) of sodium tert-butoxide in 150 mL of toluene was warmed to 80° C. where it was maintained during a 24-hour period. After this time the reaction mixture was cooled and poured into 250 mL of water. The organic layer was separated, and the aqueous layer was extracted with two 75 mL portions of diethyl ether. The organic layer and the extracts were combined and washed with 50 mL of an aqueous solution saturated with sodium chloride. The organic layer-extract combination was dried with sodium sulfate, filtered, and the filtrate was concentrated under reduced pressure to a residue. The residue, which was a mixture of products, was separated into its components by column chromatography on silica gel using 25% methylene chloride in hexane, then 50% methylene chloride in hexane as eluants. Appropriate fractions were combined and concentrated under reduced pressure, yielding 1.8 grams of 1,3-dichloro-5-methoxy-2-{4-[5-(trifluoromethyl)(2-pyridyl)]piperazinyl}benzene, and other appropriate fractions were combined and concentrated under reduced pressure, yielding 0.45 gram of 2-bromo-3-chloro-5-methoxy-1-{4-[5-(trifluoromethyl)(2-pyridyl)]piperazinyl}benzene. The NMR spectra of both compounds were consistent with the proposed structures. was maintained during a 24-hour period After this time the reaction mixture was cooled The organic layer was separated the aqueous layer was extracted with two 75 mL portions of diethyl ether washed with 50 mL of an aqueous solution saturated with sodium chloride The organic layer-extract combination was dried with sodium sulfate filtered the filtrate was concentrated under reduced pressure to a residue a mixture of products was separated into its components by column chromatography on silica gel using 25% methylene chloride in hexane concentrated under reduced pressure

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

Procedure: A solution of 5.0 grams (0.028 mole) of 1,3-dichloro-5-methoxybenzene (commercially available) in 35 mL of acetone was stirred and 5.0 grams (0.028 mole) of N-bromosuccinimide, then one mL of aqueous 10% hydrochloric acid were added. Upon completion of additions the reaction mixture was stirred at ambient temperature during a 30-minute period. After this time the reaction mixture was concentrated under reduced pressure to a residue. The residue was slurried in 20 mL of hexane and an insoluble material was removed by filtration. The filtrate was concentrated under reduced pressure, yielding 4.8 grams of the subject compound. The NMR spectrum was consistent with the proposed structure. After this time the reaction mixture was concentrated under reduced pressure to a residue an insoluble material was removed by filtration The filtrate was concentrated under reduced pressure

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

Procedure: A solution of 5.0 grams (0.028 mole) of 1,3-dichloro-5-methoxybenzene (commercially available) in 35 mL of acetone was stirred and 5.0 grams (0.028 mole) of N-bromosuccinimide, then one mL of aqueous 10% hydrochloric acid were added. Upon completion of additions the reaction mixture was stirred at ambient temperature during a 30-minute period. After this time the reaction mixture was concentrated under reduced pressure to a residue. The residue was slurried in 20 mL of hexane and an insoluble material was removed by filtration. The filtrate was concentrated under reduced pressure, yielding 4.8 grams of the subject compound. The NMR spectrum was consistent with the proposed structure. After this time the reaction mixture was concentrated under reduced pressure to a residue an insoluble material was removed by filtration The filtrate was concentrated under reduced pressure