Ethyl Acetate → HCID 15229921, compound

Participants

Reaction Steps

A nitrogen-flushed mixture of 5.8 g (12.4 mmol) of methyl (E)-6-(1,3-dihydro-4-trifluoromethylsulfonyloxy-6-methoxy-7-methyl-3-oxoisobenzofuran-5-yl)-4-methyl-4-hexenoate, 1.5 g (23.0 mmol) of potassium cyanide, and 1.11 g (0.96 mmol) of tetrakis(triphenylphosphine) palladium in 100 ml of 1,4-dioxane was heated at reflux for 18 hours. Upon cooling, the mixture was partitioned between water and ethyl acetate. The organic phase was washed with water six times, with brine once, and then dried over magnesium sulfate. The solvent was evaporated under reduced pressure and the resulting solid was stirred with hexane for 18 hours and then filtered off. This solid was further purified by silica gel chromatography using 5:4 hexane:ethyl acetate to give 4.0 g (11.7 mmol) of methyl (E)-6-(1,3-dihydro-4-cyano-6-methoxy-7-methyl-3-oxoisobenzofuran-5-yl)-4-methyl-4-hexenoate, mp 87°-88° C.

Provenance & Evidence