Styrene → 3-Nitrostilbene

Participants

Reaction Steps

A mixture of 3-bromonitrobenzene (1 g), styrene (1.7 mL), palladium(II) acetate (95 mg), tris(2-methylphenyl)phosphine (0.3 g) and N,N-diisopropylamine (5 mL) was heated for reflux for 24 hours. The reaction mixture was diluted with diethyl ether, and the resulting mixture was washed with 1 mol/L hydrochloric acid, water and brine successively, and dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure, and the residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate =10/1) to give 3-((E)-2-phenylvinyl)nitrobenzene (0.76 g). To the solution of the obtained 3-((E)-2-phenylvinyl)nitrobenzene (0.26 g) in methanol (10 mL) was added 10% palladium-carbon powder (50 mg), and the mixture was stirred at room temperature under a hydrogen atmosphere for 2 hours. The insoluble material was removed by filtration, and the filtrate was concentrated under reduced pressure to give the title compound (0.22 g).

Provenance & Evidence