反应详情

To a suspension of 1-fluorenecarboxylic acid (184 mg) and oxalyl chloride (0.2 ml) in dichloromethane (4 ml) was added N,N-dimethylformamide (0.01 ml), and the mixture was stirred for 2 hours. The resultant solution was evaporated to give a crude acid chloride. To a suspension of 3-pyridazin-3-yl-phenylamine (150 mg) and pyridine (0.21 ml) in dichloromethane (2 ml) was dropwise added a solution of the acid chloride obtained above in dichloromethane. (5 ml) followed by stirring for an hour. The mixture was diluted with dichloromethane and washed with an aqueous solution of sodium hydrogen carbonate and brine. The separated organic layer was dried over sodium sulfate and evaporated under reduced pressure. The residue was purified by a silica gel column chromatography eluting with 2% methanol in dichloromethane to give N-(3-(pyridazin-3-yl)phenyl)-9H-fluorene-1-carboxamide (44 mg, 13.8%).

1. customThe resultant solution was evaporated
2. customto give a crude acid chloride
3. stirringby stirring for an hour
4. washwashed with an aqueous solution of sodium hydrogen carbonate and brine
5. dry with materialThe separated organic layer was dried over sodium sulfate
6. customevaporated under reduced pressure
7. customThe residue was purified by a silica gel column chromatography
8. washeluting with 2% methanol in dichloromethane