Alkynylation of benzonitriles via nickel catalyzed C–C bond activation
摘要:
The scope of synthetically useful nickel catalyzed cross coupling reactions of benzonitriles has now been expanded to allow alkynylation. Thus, the cross coupling of benzonitriles with alkynylzinc reagents occurs readily in the presence of Ni/PMe3 based catalysts to afford the respective aryl alkynes in high yields. (C) 2004 Elsevier Ltd. All rights reserved.
Process for preparing alkynyl-substituted aromatic and heterocyclic compounds
申请人:Miller A. Joseph
公开号:US20050137402A1
公开(公告)日:2005-06-23
Mono- and disubstituted aryl or heterocyclic acetylenes are produced by a process comprising reacting an aryl nitrile with an alkynylzinc compound, a bis-alkynylzinc compound, or an alkynylmagnesium compound, in the presence of a nickel/phosphine catalyst.