Glyoxylic Acid → (Ethoxy-phenyl-phosphinoyl)-hydroxy-acetic acid ethyl ester

Participants

Reaction Steps

To a solution of ethylphenylphosphinate (0.5 g, 2.94 mmol) in 5 mL of anhydrous toluene and anhydrous triethylamine (0.17 mL, 1.18 mmol) under argon was added 0.68 g (2.94 mmol) of a 50% (w/w) glyoxylic acid solution in toluene. The mixture was stirred for 16 h at room temperature, at which point the solvent was removed in vacuo. The crude material was purified by flash chromatography on silica gel. Elution with 100% ethylacetate afforded 383 mg (48%) of the desired compound.

Provenance & Evidence