Abstract
Phosphine–gold(I) alkynyl complexes are stable compounds that can be subjected to palladium-catalyzed cross-coupling reactions. This article outlines the synthesis of such compounds and their ability to play the role as substrates in Sonogashira couplings is covered. This synthetic approach is particularly attractive when the related terminal alkynes are unstable.
1 Introduction
2 Phosphine–Gold(I) Alkynyl Complexes
3 Sonogashira-Like Couplings
4 Transmetalation Step – Mechanistic Insight
5 Acetylenic Scaffolding with Tetraethynylethene Derivatives
6 Conclusion
Key words
alkynes - arylation - catalysis - complexes - copper - coupling - palladium