Hydrochloric Acid → HCID 58940057, compound

Participants

Reaction Steps

2.2 g (8.3 mmol) of 2-methoxy-3,5-di-tert-butylphenylboronic acid, 942 mg (4.15 mmol) of 3-bromocinnamic acid and 70 ml of DME were introduced into a three-necked flask under a stream of nitrogen. 11.4 ml of aqueous potassium carbonate solution (2M) were added dropwise and the reaction medium was degassed. 144 mg (0.12 mmol) of tetrakistriphenylphosphinepalladium(0) were then added and the mixture was refluxed for 20 hours. Water and ethyl acetate were added to the reaction medium and this mixture was acidified to pH 1 with hydrochloric acid. The organic phase was separated out after settling had taken place, washed with water, dried over magnesium sulfate and evaporated. The residue obtained was purified by chromatography on a column of silica eluted with a mixture of heptane and ethyl acetate (75/25). After evaporation of the solvents, 990 mg (66%) of 3-(3′,5′-di-tert-butyl-2′-methoxy-3-biphenylyl)acrylic acid having a melting point of 182°-3° C. were collected.

Provenance & Evidence