1,2,3-trichloro-4-methylbenzene

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

Procedure: 2,3,4-Trichlorotoluene (2.00 g) was dissolved in carbon tetrachloride (20 ml), and 2,2′-azobis(2,4-dimethyl-4-methoxyvaleronitrile) (158 mg) and N-bromosuccinimide (2.00 g) were added thereto. The mixture was refluxed under heating for 2 hr, and hexane was added, which was followed by stirring under cooling for 30 min. The mixture was filtrated and an insoluble matter on a filter paper was washed with small amounts of hexane. The filtrates were combined and concentrated under reduced pressure. Diisopropyl ether was added to the residue and the mixture was washed successively with a saturated aqueous sodium hydrogencarbonate solution and saturated brine, dried over anhydrous magnesium sulfate and filtrated. The filtrate was concentrated under reduced pressure to give a mixture (2.40 g) of the objective compound and 2,3,4-trichlorotoluene as brown crystals. The mixture was refluxed under heating for 2 hr under cooling for 30 min The mixture was filtrated an insoluble matter on a filter paper was washed with small amounts of hexane concentrated under reduced pressure Diisopropyl ether was added to the residue the mixture was washed successively with a saturated aqueous sodium hydrogencarbonate solution and saturated brine dried over anhydrous magnesium sulfate filtrated The filtrate was concentrated under reduced pressure

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

Procedure: 2,3,4-Trichlorotoluene (2.00 g) was dissolved in carbon tetrachloride (20 ml), and 2,2′-azobis(2,4-dimethyl-4-methoxyvaleronitrile) (158 mg) and N-bromosuccinimide (2.00 g) were added thereto. The mixture was refluxed under heating for 2 hr, and hexane was added, which was followed by stirring under cooling for 30 min. The mixture was filtrated and an insoluble matter on a filter paper was washed with small amounts of hexane. The filtrates were combined and concentrated under reduced pressure. Diisopropyl ether was added to the residue and the mixture was washed successively with a saturated aqueous sodium hydrogencarbonate solution and saturated brine, dried over anhydrous magnesium sulfate and filtrated. The filtrate was concentrated under reduced pressure to give a mixture (2.40 g) of the objective compound and 2,3,4-trichlorotoluene as brown crystals. The mixture was refluxed under heating for 2 hr under cooling for 30 min The mixture was filtrated an insoluble matter on a filter paper was washed with small amounts of hexane concentrated under reduced pressure Diisopropyl ether was added to the residue the mixture was washed successively with a saturated aqueous sodium hydrogencarbonate solution and saturated brine dried over anhydrous magnesium sulfate filtrated The filtrate was concentrated under reduced pressure

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

Procedure: 2,3,4-Trichlorotoluene (2.00 g) was dissolved in carbon tetrachloride (20 ml), and 2,2′-azobis(2,4-dimethyl-4-methoxyvaleronitrile) (158 mg) and N-bromosuccinimide (2.00 g) were added thereto. The mixture was refluxed under heating for 2 hr, and hexane was added, which was followed by stirring under cooling for 30 min. The mixture was filtrated and an insoluble matter on a filter paper was washed with small amounts of hexane. The filtrates were combined and concentrated under reduced pressure. Diisopropyl ether was added to the residue and the mixture was washed successively with a saturated aqueous sodium hydrogencarbonate solution and saturated brine, dried over anhydrous magnesium sulfate and filtrated. The filtrate was concentrated under reduced pressure to give a mixture (2.40 g) of the objective compound and 2,3,4-trichlorotoluene as brown crystals. The mixture was refluxed under heating for 2 hr under cooling for 30 min The mixture was filtrated an insoluble matter on a filter paper was washed with small amounts of hexane concentrated under reduced pressure Diisopropyl ether was added to the residue the mixture was washed successively with a saturated aqueous sodium hydrogencarbonate solution and saturated brine dried over anhydrous magnesium sulfate filtrated The filtrate was concentrated under reduced pressure