A Strategy to Synthesize Taxol Side Chain and (−)-<i>epi</i> Cytoxazone via Chiral Brønsted Acid-Rh<sub>2</sub>(OAc)<sub>4</sub> Co-catalyzed Enantioselective Three-Component Reactions
作者:Yu Qian、Xinfang Xu、Liqin Jiang、Dipak Prajapati、Wenhao Hu
DOI:10.1021/jo101559p
日期:2010.11.5
A new approach to synthesize optically active β-amino-α-hydroxyl acid derivatives via chiral Brønsted acid-Rh2(OAc)4 cocatalyzed three-component reactions of diazo acetates with alcohols and imines is reported. A matched reaction system was identified to give the products in moderate diastereoselectivity and good enantioselectivity. Application of this methodology is demonstrated in the efficient synthesis
作者:Denisa Hidasová、Martin Janák、Emanuela Jahn、Ivana Císařová、Peter G. Jones、Ullrich Jahn
DOI:10.1002/ejoc.201801139
日期:2018.10.9
With a single jump anti‐β‐amino‐α‐hydroxy esters or amides are obtained by merging polar aza‐Michael additions of chiral 1‐phenylethylamides to α,β‐unsaturated carboxylic acid derivatives and diastereoselective radical coupling with persistent free radical TEMPO.