Alkoxylation of Ketone Mediated by N‐Heterocyclic Carbene Borane and Sulfuric Acid in Alcohol

In this study, a novel method for the alkoxylation of ketones has been developed, employing sulfuric acid and N‐heterocyclic carbene boranes (NHC–boranes). The ketones are reduced using NHC–borane (diMe‐Imd‐BH3) and subsequently alkoxylate with sulfuric acid in alcohol solvents. Due to the stability of NHC–borane in the presence of both moisture and air, this reaction emerges as an effective and accessible approach for organic synthesis.