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Cobalt- and Iron-Catalyzed Regiodivergent Alkene Hydrosilylations
preprintsubmitted on 18.12.2020, 20:29 and posted on 21.12.2020, 13:09 by Sheng Zhang, Jia-Shiang Liao, Daniel Unruh, Guigen Li, Michael Findlater
A complementary set of base metal catalysts has been developed for regiodivergent alkene hydrosilylations: iron complexes of amine-iminopyridine ligands are selective for Markovnikov hydrosilylations (branched/linear up to >99:1), while the cobalt complexes bearing the same type of ligands provide excellent levels of anti-Markovnikov selectivity (linear/branched up to >99:1). Both systems exhibit high efficiency and wide functional group tolerance.