Highly Enantioselective Intermolecular Hydroamination of Allylic Amines with Chiral Aldehydes as Tethering Catalysts
作者:Melissa J. MacDonald、Colin R. Hesp、Derek J. Schipper、Marc Pesant、André M. Beauchemin
DOI:10.1002/chem.201203462
日期:2013.2.18
Chirally LinkedIn: Chiralaldehydes are effective tetheringcatalysts for enantioselectiveintermolecularhydroamination, which provides access to vicinal diamine motifs in good yields and excellent enantioselectivities (see scheme). This work highlights simple chiral α‐oxygenated aldehydes as effective organocatalysts capable of efficiently inducing asymmetry through transient intramolecularity.
Hydrogen Bonding Directed Intermolecular Cope-Type Hydroamination of Alkenes
作者:Shu-Bin Zhao、Eric Bilodeau、Valérie Lemieux、André M. Beauchemin
DOI:10.1021/ol3023177
日期:2012.10.5
Intermolecularhydroamination of unactivated alkenes represents a significant synthetic challenge. An efficient Cope-typehydroamination is achieved under mild conditions for reactions of N-alkylhydroxylamines with allylic amines, using hydrogen bonding to achieve increased reactivity and high regioselectivity. This approach provides a number of highly functionalized vicinal diamine motifs as Markovnikov