反应详情

To a suspension of 9-cyano-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid ethyl ester (80 mg) in THF (6 mL) and ethanol (3 mL) was added sodium hydroxide solution (18 mg in 3 mL of water) and the reaction stirred at room temperature for 16 h. The reaction was then acidified with 2M hydrochloric acid and the resulting solid was filtered and air-dried to give 9-cyano-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid.

1. filtrationthe resulting solid was filtered
2. customair-dried