反应详情

To a suspension of 8-bromo-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid (396 mg) in dry dichloromethane (20 mL) was added oxalyl chloride (180 μL) and DMF (1 drop). After 3 hours the solvent was removed in vacuo and to the residue was added acetonitrile (20 mL), 2-chloroaniline (140 μL) and sodium bicarbonate (111 mg). After 3 hours, water was added to the reaction mixture and the resulting precipitate was collected by filtration to yield 8-bromo-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid (2-chloro-phenyl)-amide (467 mg).

1. customAfter 3 hours the solvent was removed in vacuo and to the residue
2. additionwas added acetonitrile (20 mL), 2-chloroaniline (140 μL) and sodium bicarbonate (111 mg)
3. additionwater was added to the reaction mixture
4. filtrationthe resulting precipitate was collected by filtration