Beilstein J. Org. Chem.2016,12, 444–461, doi:10.3762/bjoc.12.47
the earliest known carbon–carbon bond-forming reactions catalysed by NHCs. The rapid growth of NHC catalysis in general has resulted in the development of a variety of benzoin and benzoin-type reactions. An overview of such NHC-catalysed benzoin reactions is presented.
Keywords: acyloinreaction
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Graphical Abstract
Scheme 1:
Breslow’s proposal on the mechanism of the benzoin condensation.