Citric Acid → HCID 68964088, compound

Participants

Reaction Conditions

Reaction Steps

To N,N-dimethylacetamide 3.0 mL solution of tert-butyl 2-(4-fluoroanilino)-4-vinylbenzoate 0.10 g were added 1-bromo-4-(trifluoromethoxy)benzene 0.12 g, tributylamine 0.15 mL and palladium acetate 3.6 mg at room temperature, and it was stirred at 110° C. for 6 hours. Palladium acetate 3.6 mg was added to it, and it was stirred at 130° C. for 6 hours. 1-bromo-4-(trifluoromethoxy)benzene 0.12 g, tributylamine 0.076 mL and (E)-di(μ-acetato)bis(o-(di-o-tolylphosphino)benzyl)dipalladium(II) 6.3 mg were added to it, and it was stirred at 80° C. for 2 hours. After the reaction mixture was cooled to room temperature, ethyl acetate and 10% citric acid aqueous solution were added to it. The organic layer was separated and collected, and the solvent was removed under reduced pressure after sequential washing with 10% citric acid aqueous solution, saturated sodium thiosulfate aqueous solution and saturated sodium chloride aqueous solution. The obtained residue was refined by silica gel column chromatography [Trikonex company, Flash Tube 2008, eluent; hexane:ethyl acetate=10:1] to give tert-butyl 2-(4-fluoroanilino)-4-((E)-2-(4-(trifluoromethoxy)phenyl)vinyl)benzoate.

Provenance & Evidence