The first three-component reaction of norbornene with two alkynes leading to 1,5-enyne via C−H bond activation of terminal silylacetylene was achieved using a Ni(cod)2/phosphine catalyst. This reaction is applicable for various internal alkynes and norbornene derivatives with high regio- and stereoselectivities.
Hydrophosphination of Propargylic Ethers with Diphenylphosphine in the Presence of LiHMDS,<i>N</i>-Heterocyclic Carbene, and Ti(NMe<sub>2</sub>)<sub>4</sub>
Regio- and stereoselective hydrophosphination of propargylic ethers with diphenylphosphine has been achieved using three-component catalyst, LiN(SiMe3)2/1,3-dimethylimidazol-2-ylidene/Ti(NMe2)4 (10 mol % of each).
MCM-41-supported bidentate phosphine palladium(0) complex: a highly active and recyclable catalyst for the Sonogashira reaction of aryl iodides
作者:Mingzhong Cai、Junchao Sha、Qiuhua Xu
DOI:10.1016/j.tet.2007.03.111
日期:2007.5
The first MCM-41-supportedbidentatephosphine palladium(0) complex has been prepared. This complex is a highly efficientcatalyst for Sonogashira reaction and can be reused at least 10 times without any decrease in activity.
An Efficient Coupling of Aryl Iodides with Terminal Alkynes Catalyzed by Silica-Supported Sulfur Palladium(0) Complex
作者:Ming-Zhong Cai、Cai-Sheng Song、Xian Huang
DOI:10.1080/00397919708006795
日期:1997.6
Abstract A silica - supported sulfur palladium(0) complex was prepared by the direct ligand - exchange reaction of poly - γ - mercaptopropylsiloxane with Pd(PPh3)4. It was an efficient catalyst for the coupling of aryliodides with terminalalkynes.
Highly Chemoselective Nickel-Catalyzed Three-Component Cross-Trimerization of Three Distinct Alkynes Leading to 1,3-Dien-5-ynes
作者:Kenichi Ogata、Jun Sugasawa、Shin-ichi Fukuzawa
DOI:10.1002/anie.200902099
日期:2009.8.3
Cross‐yned: The first highly chemoselective three‐component cross‐trimerization between a triisopropylsilylacetylene, an ether‐functionalized unsymmetrical internalalkyne, and a symmetrical internalalkyne leading to a 1,3‐dien‐5‐yne was achieved using a [Ni(cod)2]/PPh3 catalyst. This reaction is applicable for various internalalkynes with high regio‐ and stereoselectivities.