反应详情

To a mixture of 4-[2-(1,2,3,4-tetramethoxy-6,7,8,9-tetrahydro-5H-benzo[a]cyclohepten-7-yl)ethoxy]benzoic acid (1.00 g), 2,6-pyridinedicarboxylic acid (1.16 g), THF (40 ml), and water (10 ml) was dropwise added a solution of CAN (5.09 g) in water (10 ml) with cooling with ice. After the reaction mixture was stirred for 15 min, water was added to the reaction mixture, which was extracted with combined solvent of ethyl acetate and THF. The organic layer was washed with water, and saturated aqueous sodium chloride, and dried. The solvent was removed in vacuo. The residue was recrystallized from THF-ethyl acetate to yield the entitled compound (400 mg) as crystals.

1. temperaturewith cooling with ice
2. extractionwas extracted with combined solvent of ethyl acetate and THF
3. washThe organic layer was washed with water, and saturated aqueous sodium chloride
4. customdried
5. customThe solvent was removed in vacuo
6. customThe residue was recrystallized from THF-ethyl acetate