Ammonia → HCID 59459870, compound

Participants

Reaction Steps

Methyl 3,5-dibromo-4-chlorobenzoate: CuCl2 (2.82 g, 21.0 mmol) in MeCN (30 mL) was stirred at 80° C. for 30 min. To this mixture tert-butylnitrite (2.7 mL, 23 mmol) was then added dropwise at same temperature and the mixture was stirred for another 10 min. Methyl 4-amino-3,5-dibromobenzoate (5.0 g, 16 mmol) in MeCN (30 mL) was added dropwise to the reaction mixture and then stirred at 80° C. for 30 min. The reaction mixture was brought to ambient temperature and an aqueous ammonia solution (20 mL) was added to the reaction mixture and extracted with petroleum ether. The organic layer was washed with brine followed by water, dried (Na2SO4), filtered and concentrated to afford the title compound as an off white solid (4.5 g, 84%). 1H NMR (300 MHz, DMSO-d6) δ 8.21 (s, 2H), 3.94 (s, 3H); ESIMS m/z 326 ([M]+); IR (thin film) 1732, 746 cm−1.

Provenance & Evidence