HCID 86587734, compound → HCID 73710678, compound

Participants

Reaction Steps

To 8-allyl-4-oxo-7-(2,2,2-trifluoro-acetylamino)-4H-chromene-2-carboxylic acid ethyl ester (12.2 g, 32 mmole) in 500 mL of methylene chloride was added 1.5 g (5.8 mmole) of bis(acetonitrile) palladium (II) chloride. The mixture was refluxed under nitrogen for 24 hours. Upon cooling to room temperature, the mixture was filtered through 75 g of silica gel, with additional methylene chloride as needed to fully elute the product. Concentration in vacuum gave 10.4 g of the title compound as a yellow solid, m.p. 140-141° C.

Provenance & Evidence