The Lewis superacid, bis(1-methyl-ortho-carboranyl)borane, is rapidly accessed in two steps. It is a very effective hydroboration reagent capable of B-H addition to alkenes, alkynes, and cyclopropanes. To date, this is the first identified Lewis superacidic secondary borane and most reactive neutral hydroboration reagent.
Keywords: Borane; Carborane; Cyclopropane; Hydroboration; Lewis Acid.
© 2023 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.