Highly Regio‐ and Stereodivergent Access to 1,2‐Amino Alcohols or 1,4‐Fluoro Alcohols by NHC‐Catalyzed Ring Opening of Epoxy enals
2018
: Described is an unprecedented NHC-catalyzed (NHC=N-heterocyclic carbene), stereoselective ring opening of epoxy and cyclopropyl enals to deliver valuable compounds bearing multiple stereocenters. A straightforward three-step procedure involving two catalytic enantioselective transformations has been developed and leads to a regio- and stereodivergent synthesis of either 1,2-amino alcohols/diamines or 1,4-fluoro alcohols with excellent diastereo- and enantiopurity.
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