Photoreactivity of η3-allylpalladium complexes studied by CIDNP

Abstract

The photoreaction of η³-allylpalladium complexes was studied by means of chemically induced dynamic nuclear polarization (CIDNP). Strong polarizations for the protons of 1,5-dienes were observed during photolysis; the addition of organic halides and triphenylphosphine to the reaction mixture led to the formation of polarized alkylated olefins. The origin of these polarizations is discussed and reaction schemes are proposed.