Iron-Catalyzed Highly Regio- and Stereoselective Conjugate Addition of 2,3-Allenoates with Grignard Reagents
作者:Zhan Lu、Guobi Chai、Shengming Ma
DOI:10.1021/ja075750o
日期:2007.11.28
An efficient highly regio- and stereoselective iron-catalyzed conjugate addition of 2,3-allenoates with primary or secondary alkyl, phenyl, or vinyl Grignardreagents to synthesize multi-substituted β,γ-unsaturated enoates has been reported. The in situ formed magnesium dienolate may readily react with different electrophilic reagents to construct an allylic quaternary carbon at the α-position of the
Gold-Catalyzed Simultaneous Formation of C–C, C═O, and C–F bonds in the Presence of Selectfluor: A Synthesis of Fluoroindenes from Allene Esters
作者:Yunkui Liu、Jie Zhu、Jianqiang Qian、Zhenyuan Xu
DOI:10.1021/jo3006528
日期:2012.6.15
An approach for the synthesis of fluorinated indene derivatives has been developed via a gold-catalyzed three-component tandem reaction between allene esters, Selectfluor, and water.