the second step occurs with considerable ease. The reaction of phosphine with ethyl acrylate, however, did give a 4: 1 acrylate-phosphine adduct in addition to the three expected organophosphine products. The 4: l adduct appeared to be identical (boiling point, infrared spectrum, NMR spectrum, index of refraction, and elemental analysis) with bis (2- carbethoxyethyl)-2, 4-dicarbethoxybutylphos-phine, prepared unambiguously by the ...
