Thionyl Chloride → HCID 86640269, compound

Participants

Reaction Conditions

Reaction Steps

2-Azido-4-fluoro-benzoic acid (3.01 g, 17 mmol; Barral, Karine; Moorhouse, Adam D.; Moses, John E. Organic Letters (2007), 9(9), 1809-1811) was dissolved at ambient temperature in thionyl chloride (27.3 ml) under an argon atmosphere. The reaction mixture was heated to 80° C. for 1.5 h and brought to dryness under reduced pressure to give 2-azido-4-fluoro-benzoyl chloride as orange oil. 2-Azido-4-fluoro-benzoyl chloride was dissolved at ambient temperature in CH2Cl2 (23 ml) under an argon atmosphere. 4-Chloro-phenylamine (2.12 g, 17 mmol; [106-47-8]) was added and the reaction mixture was stirred at ambient temperature for 14 h. Saturated aqueous NaHCO3 solution was added until a pH of 8 was adjusted, the layers were separated and the aqueous layer was extracted two more times with CH2Cl2. The combined extracts were washed with ice water/brine 1/1 and dried over Na2SO4. The solvent was removed under reduced pressure to give a brown solid which was crystallized from heptane/CH2Cl2 to give the title compound (3.08 g, 11 mmol; 64%) as off-white crystals. MS: m/e=291.0 [M+H+].

Provenance & Evidence