Tributylphosphine → HCID 11320149, compound

Participants

Reaction Steps

Under a atmosphere of nitrogen, azodicarboxylic dipiperidide (0.50 g, 1.89 mmol) was added at 0–5° C. to a stirred solution of tributylphosphine (0.37 mL, 1.89 mmol), (S)-ethyl 2-ethoxy-3-(4-hydroxyphenyl)-propionate (0.32 g, 1.32 mmol) and (E)(E)(S) 2-ethoxy-3-(4-{3-[4′-{3-hydroxy-1-methyl-propenyl)-biphenyl-4-yl]-but-2-enyloxy}-phenyl)-propionic acid ethyl ester (0.65 g, 1.26 mmol) in dry THF (15 ml). The mixture was warmed to room temperature, and stirred for 18 h. The resulting mixture was diluted with water and ethyl acetate, the aqueous layer collected and further extracted with ethyl acetate. The organic layers were combined, washed with brine, dried (MgSO4) and evaporated to give 580 mg (63%) of the title compound.

Provenance & Evidence