Water → HCID 54432120, compound

Participants

Reaction Steps

Ethyl diethylphosphonoacetate (1.3 ml ) was dissolved in 30 ml of THF, and 0.26 g of sodium hydride (60% oily) was added to the solution under ice cooling, followed by stirring under the same conditions for 30 minutes. To the mixture was added dropwise 20 ml of a solution of 0.3 g of 7-fluoro-2-methyl-5-oxo- 5H-dibenzo[a,d]cycloheptene in THF, and the mixture was heated under reflux for 2 hours. After cooling, water and ethyl acetate were added to the mixture, and the organic layer was washed with a saturated aqueous solution of sodium chloride and dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure, and the residue was purified by silica gel column chromatography [eluent: hexane/ethyl acetate (10/1)] to give 0.38 g (98%) of the product as a yellow oily substance.

Provenance & Evidence