Cu,Ni, andPdMediated Homocoupling Reactions in Biaryl Syntheses: TheUllmann Reaction
- 28 January 2004
- book chapter
- Published by Wiley
- p. 265-555
Abstract
The traditional Ullman reaction is the homocoupling of aromatic halides mediated by copper at elevated temperatures. Ullman first reported this reaction in 1901. Although the coupling conditions first reported are still widely used, a host of modifications have been made to these reactions. Some of these modifications include the use of activated and alternative metals, often resulting in much lower coupling temperatures. Nickel and palladium are the most utilized source of alternative metals, Periodic reviews have been published. This chapter covers the literature on copper, nickel, and palladium mediated homocoupling reactions in biaryl synthesis from 1901 to 2000. The focus of this chapter is the scope and limitation of these processes, preparation of the activated metal, and mechanism of the homocoupling processKeywords
This publication has 859 references indexed in Scilit:
- Tuning the Selectivity of Heterogeneous Catalysts: A Trimetallic Approach to Reductive Coupling of Chloroarenes in WaterAdvanced Synthesis & Catalysis, 2001
- Bishexa-peri-hexabenzocoronenyl: A “Superbiphenyl”Journal of the American Chemical Society, 2000
- Catalytic and non-catalytic formation of 4,4′-dimethylbiphenyl using p-chlorotolueneApplied Catalysis A: General, 2000
- Well-Defined Oligo(pyrrole-2,5-diyl)s by the Ullmann ReactionMacromolecules, 1995
- Synthesis of Low-Bandgap Zwitterionic and Planar Conjugated Pyrrole-Derived Polymers. Reversible Optical Absorptions from the UV to the Near-IRJournal of the American Chemical Society, 1994
- Preparation of poly(p-phenylene) via a new precursor routeMacromolecules, 1993
- Preparation and Properties of Poly(2,2′-bipyridine-5,5′-diyl)Chemistry Letters, 1990
- High molecular weight aromatic polymers by nickel coupling of aryl polychloridesJournal of Polymer Science Part A: Polymer Chemistry, 1990
- The Ullmann Ether CondensationRussian Chemical Reviews, 1974
- Oligophenyls, Oligophenylenes, and Polyphenyls, a Class of Thermally Very Stable CompoundsAngewandte Chemie International Edition, 1968