Efficient Copper(II)-Catalyzed Addition of Activated Methylene Compounds to Alkenes
作者:Yu Li、Zhengkun Yu、Sizhong Wu
DOI:10.1021/jo800836g
日期:2008.7.1
regioselective addition of β-diketones to styrenes, norbornene, cyclic enol ether, and diene has been realized by means of copper(II) triflate as the catalyst. The solvent effect is prominent on the reactions, and the desired addition products were obtained in good to excellent yields only in dioxane or ionic liquid [bmim]PF6. The mechanism suggests that copper(II) triflate activates the enolic O−H
Indium(III)-Catalyzed Addition of 1,3-Dicarbonyl Compounds to Alkenes
作者:Yu Yuan、Zhuangzhi Shi
DOI:10.1055/s-2007-992388
日期:——
A new InCl3-catalyzed addition reaction of 1,3-dicarbonyl compounds to various alkenes proceeded in good yields and can be carried out in air, which provided an easy and practical procedure for carbon-carbon bond formation.
Gold- and Silver-Catalyzed Highly Regioselective Addition of Active Methylenes to Dienes, Triene, and Cyclic Enol Ethers
作者:Rene-Viet Nguyen、Xiao-Quan Yao、D. Scott Bohle、Chao-Jun Li
DOI:10.1021/ol047543o
日期:2005.2.1
The combination of gold and silver salts catalyzed the addition of active methylenes to dienes, triene, and cyclic enol ethers with high regioselectivity. The catalysis provides a synthetically useful method for functionalized carbocycles and heterocycles through a highly atom-economical carbon-carbon bond formation. [reaction: see text]
HIGHLY EFFICIENT ADDITION OF ACTIVATED METHYLENE COMPOUNDS TO ALKENES CATALYZED BY GOLD AND SILVER
作者:Li, Chao-Jun、Yao, Xiaoquan、Jones, Brian P、Ragan, John A.
DOI:10.15227/orgsyn.084.0222
日期:——
FeCl3-catalyzed addition of nitrogen and 1,3-dicarbonyl nucleophiles to olefins
作者:Christophe Dal Zotto、Julien Michaux、Araceli Zarate-Ruiz、Eric Gayon、David Virieux、Jean-Marc Campagne、Vincent Terrasson、Grégory Pieters、Anne Gaucher、Damien Prim
DOI:10.1016/j.jorganchem.2010.09.031
日期:2011.1
A direct intermolecular addition of nitrogen and 1,3-dicarbonyl nucleophiles to stabilized double bonds (styrenes, 1,3-dienes, enol-ethers, sugars..) in the presence of green and inexpensive FeCl3 catalyst is described. (C) 2010 Elsevier B.V. All rights reserved.