Parham AsgariYuanda HuaApparao BokkaChanachon ThiamsiriWatcharapon PrasitwatcharakornAshif KaredathXin ChenSinjinee SardarKyungsuk YumGyu LeemBrad S. PierceKwangho NamJiali GaoJunha JeonUmeå UniversitetUniversity of Minnesota Twin CitiesState University of New York College of Environmental Science and ForestryMahidol UniversityJilin UniversityUniversity of Texas at Arlington2020-01-272020-01-272019-02-01Nature Catalysis. Vol.2, No.2 (2019), 164-173252011582-s2.0-85060796651https://repository.li.mahidol.ac.th/handle/20.500.14594/50274© 2019, The Author(s), under exclusive licence to Springer Nature Limited. Because of the importance of hydrogen atom transfer (HAT) in biology and chemistry, there is increased interest in new strategies to perform HAT in a sustainable manner. Here, we describe a sustainable, net redox-neutral HAT process involving hydrosilanes and alkali metal Lewis base catalysts—eliminating the use of transition metal catalysts—and report an associated mechanism concerning Lewis base-catalysed, complexation-induced HAT. The catalytic Lewis base-catalysed, complexation-induced HAT is capable of accessing both branch-specific hydrosilylation and polymerization of vinylarenes in a highly selective fashion, depending on the Lewis base catalyst used. In this process, the Earth-abundant, alkali metal Lewis base catalyst plays a dual role. It first serves as a HAT initiator and subsequently functions as a silyl radical stabilizing group, which is critical to highly selective cross-radical coupling. An electron paramagnetic resonance study identified a potassiated paramagnetic species, and multistate density functional theory revealed a high HAT character, yet multiconfigurational nature in the transition state of the reaction.Mahidol UniversityBiochemistry, Genetics and Molecular BiologyChemical EngineeringArticleSCOPUS10.1038/s41929-018-0217-z