Copper‐Catalyzed Arylation of Nucleophiles by Using Butadienylphosphines as Ligands: Mechanistic Insight

Abstract

Worth diene for: The butadienylphosphine L (see scheme), obtained on a large scale from a new synthetic method, is an efficient ligand in Ullmann-type copper-catalyzed arylation reactions. The use of this phosphorus ligand made it possible to follow the reaction by 31P NMR spectroscopy and thus to propose a mechanism for the Ullmann reaction. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.