2,6-二氟-3-甲基苯胺

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 2,6-difluoro-3-methylaniline (5 g, 34.9 mmol) in acetic acid (50 ml) was added dropwise a solution of bromine (1.97 ml, 38.4 mmol) in acetic acid (10 ml) at 55° C. The reaction mixture was stirred for 1 hour and then poured to water/ice. A solid was filtered, washed with water and dried in a vacuum oven. 6.3 g of a black solid were obtained (yield=81%). A solid was filtered washed with water dried in a vacuum oven

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 2,6-difluoro-3-methylaniline (5 g, 34.9 mmol) in acetic acid (50 ml) was added dropwise a solution of bromine (1.97 ml, 38.4 mmol) in acetic acid (10 ml) at 55° C. The reaction mixture was stirred for 1 hour and then poured to water/ice. A solid was filtered, washed with water and dried in a vacuum oven. 6.3 g of a black solid were obtained (yield=81%). A solid was filtered washed with water dried in a vacuum oven

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 2,6-difluoro-3-methylaniline (5 g, 34.9 mmol) in acetic acid (50 ml) was added dropwise a solution of bromine (1.97 ml, 38.4 mmol) in acetic acid (10 ml) at 55° C. The reaction mixture was stirred for 1 hour and then poured to water/ice. A solid was filtered, washed with water and dried in a vacuum oven. 6.3 g of a black solid were obtained (yield=81%). A solid was filtered washed with water dried in a vacuum oven

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 2,6-difluoro-3-methylaniline (15 g, 105 mmol) in acetic acid (80 mL) was heated to 70° C. and a solution of sulfuryl chloride (16.0 g, 115 mmol) in acetic acid (40 mL) was added dropwise over 20 minutes. The temperature was maintained for 3 hours, then cooled and concentrated. The residue taken into water (100 mL) and the pH was adjusted to 9 with 2N sodium hydroxide and then extracted with methylene chloride (2×75 mL) and the combined extracts washed with brine, dried (sodium sulfate) and concentrated. The residue was distilled to give 4-chloro-2,6-difluoro-3-methylaniline (12.2 g, 69 mmol): bp 55°-65° C./55 mm. The temperature was maintained for 3 hours cooled concentrated extracted with methylene chloride (2×75 mL) the combined extracts washed with brine dried (sodium sulfate) concentrated The residue was distilled

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 2,6-difluoro-3-methylaniline (15 g, 105 mmol) in acetic acid (80 mL) was heated to 70° C. and a solution of sulfuryl chloride (16.0 g, 115 mmol) in acetic acid (40 mL) was added dropwise over 20 minutes. The temperature was maintained for 3 hours, then cooled and concentrated. The residue taken into water (100 mL) and the pH was adjusted to 9 with 2N sodium hydroxide and then extracted with methylene chloride (2×75 mL) and the combined extracts washed with brine, dried (sodium sulfate) and concentrated. The residue was distilled to give 4-chloro-2,6-difluoro-3-methylaniline (12.2 g, 69 mmol): bp 55°-65° C./55 mm. The temperature was maintained for 3 hours cooled concentrated extracted with methylene chloride (2×75 mL) the combined extracts washed with brine dried (sodium sulfate) concentrated The residue was distilled