Abstractmagnified imageChiral supramolecular metal‐organic frameworks assembled from copper complexes catalyse Henry and aza‐Henry reactions of aromatic and aliphatic aldehydes and N‐protected aromatic imines in high yield and good to excellent enantioselectivity. Reactions can be performed in the absence of base in ethanol or water.
Bifunctional oxazoline-thiourea-based organocatalysts were synthesized and applied to the aza-Henryreactions between N-Boc aryl imines and nitromethane in high ee and chemical yields at room temperature.
合成了基于恶唑啉-硫脲的双功能有机催化剂,并将其应用于 N-Boc 芳基亚胺与硝基甲烷之间的 aza-Henry 反应,在室温下具有高 ee 和化学产率。
Chiral Proton Catalysis: A Catalytic Enantioselective Direct Aza-Henry Reaction
作者:Benjamin M. Nugent、Ryan A. Yoder、Jeffrey N. Johnston
DOI:10.1021/ja031906i
日期:2004.3.1
during an enantioselectivereaction, this work represents the first example of this phenomenon outside of a protein. A chiral, nonracemic BisAMidine (BAM) ligand was designed, synthesized, and complexed to the proton of a Brønsted acid. The resulting coordination compound catalyzed the production of enantioenriched product from the combination of a Schiff base and nitroalkane (the aza-Henryreaction). This
Versatile Supramolecular Copper(II) Complexes for Henry and Aza-Henry Reactions
作者:Guoqi Zhang、Eiji Yashima、Wolf-D. Woggon
DOI:10.1002/adsc.200900069
日期:2009.6
Abstractmagnified imageChiral supramolecular metal‐organic frameworks assembled from copper complexes catalyse Henry and aza‐Henry reactions of aromatic and aliphatic aldehydes and N‐protected aromatic imines in high yield and good to excellent enantioselectivity. Reactions can be performed in the absence of base in ethanol or water.
Broad Spectrum Enolate Equivalent for Catalytic Chemo-, Diastereo-, and Enantioselective Addition to <i>N</i>-Boc Imines
作者:Barry M. Trost、Chao-I (Joey) Hung
DOI:10.1021/jacs.5b11248
日期:2015.12.23
Their susceptibility to other reactions such as Michael additions and the difficulty of controlling the enolate geometry make them difficult substrates. Mannich-type reactions, which previously have not been reported using N-carbamoyl-imines with simple ketone enolates, became our objective. In this report, we describe the first direct catalytic Mannich-type reaction between various ynones and N-Boc