A　general　and　facile　approach　for　the　synthesis　of　alkyl　boronic　esters　via　visible　light-mediated　decarboxylative　radical　addition　of　redox-active　esters　to　vinyl　boronic　ester　is　presented.　The　reaction　features　mild,　metal-free　reaction　conditions　and　broad　substrate　scope　covering　primary,　secondary,　and　tertiary　acids,　as　well　as　amino　acids　and　drugs.　©　the　Partner　Organisations.