Abstract
Hydrophosphonylation is an efficient process to create carbon–phosphorus bonds from unsaturated C–C bonds and to give rise to alkylphosphonate or vinylphosphonate derivatives. In this work, we report on the reactivity of H-phosphonate derivatives for the hydrophosphonylation of various alkenes and alkynes under photoinduced free-radical conditions. The reaction was carried out on activated, unactivated and/or disubstituted alkenes or alkynes with 2,2-dimethoxy-2-phenylacetophenone as a photoinitiator under UV irradiation.