Organocatalytic Conjugate Addition of Formaldehyde <i>N,N</i>-Dialkylhydrazones to β<i>,</i>γ-Unsaturated α-Keto Esters
作者:Raquel P. Herrera、David Monge、Eloísa Martín-Zamora、Rosario Fernández、José M. Lassaletta
DOI:10.1021/ol071292c
日期:2007.8.1
(1S,2R)-1-Aminoindan-2-ol-derived thioureas behave as efficient H-bonding organocatalysts for the nucleophilic conjugate addition of formaldehyde hydrazones to beta,gamma-unsaturated alpha-keto esters as enoate surrogates, affording the corresponding adducts in good yields and enantioselectivities.
(1S,2R)-1-氨基茚满-2-醇衍生的硫脲可作为有效的H键有机催化剂,将甲醛类化合物作为烯酸酯替代物亲和共轭添加甲醛beta,以提供相应的加合物。良好的产率和对映选择性。