One-pot synthesis of conjugated alkynenitriles from aldehydes
摘要:
A method of preparing conjugated alkynenitriles was developed from various aldehydes with CCl3CN and PPh3 in the presence of (BuLi)-Bu-t. The reaction proceeded via alpha-chlorovinyl nitrile as an intermediate without any side reactions such as chlorination of starting aldehydes. (c) 2007 Elsevier Ltd. All rights reserved.
Atom-Economic Route to Cyanoarenes and 2,2′-Dicyanobiarenes via Iron-Catalyzed Chemoselective [2 + 2 + 2] Cycloaddition Reactions of Diynes and Tetraynes with Alkynylnitriles
An efficient protocol for the synthesis of cyanoarenes has been developed via an iron-catalyzed chemoselective [2 + 2 + 2] cycloadditionreaction of diynes with alkynylnitriles under mild reaction conditions with good to excellent yields. The reaction is catalyzed by the combination of FeCl2·4H2O as a metal source, 2-(2,6-diisopropylphenyl)iminomethylpyridine (dipimp) as a ligand, and Zn as a reducing
Tetrabutylammonium and polymer-supported dihydrogentrifluoride: new hydrofluorinating reagents for electrophilic alkynes
作者:Patrice Albert、Jack Cousseau
DOI:10.1039/c39850000961
日期:——
Tetrabutylammonium and polymer-supporteddihydrogentrifluoride are readily accessible reagents which allow addition of HF to activated carbon–carbon triple bonds, thus leading to functional fluoroalkenes in good yields.