Organocatalytic Enantioselective Formal Conjugate Addition of a Hydroxymoyl Anion to α,β‐Unsaturated Aldehydes
作者:Beatriz Alonso、Efraím Reyes、Luisa Carrillo、Jose L. Vicario、Dolores Badía
DOI:10.1002/chem.201100605
日期:2011.5.23
Umpoled oxime source: N‐Nitromethylphthalimide is an excellent hydroxymetanimidoyl anion equivalent; under iminium catalysis and optimized reaction conditions, it undergoes a clean and highly enantioselective Michael addition to enals (see scheme). The nitro(phthalimido)methyl moiety can be then directly converted into an oxime moiety by a simple and high‐yielding protocol.