Triphenylphosphine → methyl (E)-[4-[3-(4-bromophenyl)-3-[4-trifluoromethylphenyl]allyloxy]-2-methylphenoxy]acetate

Participants

Reaction Conditions

Reaction Steps

The above allyl alcohol (0.77 g, 2.16 mmol), methyl (4-hydroxy-2-methylphenoxy)acetate (0.47 g, 2.37 mmol) and triphenylphosphine (0.68 g, 2.59 mmol) were dissolved in a mixture of anhydrous toluene (10 mL) and tetrahydrofuran (3 mL). The mixture was degassed, cooled to 0° C. and a degassed solution of diisopropyl azodicarboxylate (0.525 g, 2.60 mmol) in anhydrous tetrahydrofuran (3 mL) was added dropwise under nitrogen. The reaction mixture was stirred at ambient temperature over night. The solvents were evaporated in vacuo and the residue was submitted to column chromatography (silica gel Fluka 60, hexanes/ethyl acetate 95: 5-90:10) affording methyl (E)-[4-[3-(4-bromophenyl)-3-[4-trifluoromethylphenyl]allyloxy]-2-methylphenoxy]acetate.

Provenance & Evidence