tert-Butyl acrylate → (E)-tert-Butyl 3-(2-(2-ethoxy-2-oxoethyl)phenyl)acrylate

Participants

Reaction Conditions

Reaction Steps

To a mixture of ethyl 2-(2-bromophenyl)acetate (0.97 g, 4 mmol), t-butyl acrylate (0.51 g, 4 mmol), tris(dibenzylideneacetone)dipalladium(0) (91 mg, 0.1 mmol), dicyclohexylmethylamine (0.98 g, 5 mmol) in dioxane (5 mL) was added tri-tert-butylphosphine (0.2 mL, 1 N in toluene, 0.2 mmol). The mixture was heated at 70° C. for 30 minutes under N2. Ethyl acetate was added, and the mixture was filtered through diatomaceous earth. The filtrate was concentrated and purified by silica gel column chromatography eluting with hexanes and ethyl acetate (10:1) to afford the title compound. 1H NMR (300 MHz, DMSO-d6) δ ppm 7.79 (m, 1H), 7.72 (d, J=15.6 Hz, 1H), 7.34 (m, 3H), 6.40 (d, J=15.7 Hz, 1H), 4.06 (q, J=7.2 Hz, 2H), 3.84 (s, 2H), 1.48 (s, 9H), and 1.17 (t, J=2 Hz, 3H).

Provenance & Evidence