1.1 Modern Ullmann-Type Couplings
Buch
Herausgeber: Yoshikai, N.
Titel: Base-Metal Catalysis 1
Print ISBN: 9783132453807; Online ISBN: 9783132453821; Buch-DOI: 10.1055/b000000441
1st edition © 2023 Thieme. All rights reserved.
Georg Thieme Verlag KG, Stuttgart
Fachgebiete: Organische Chemie;Chemische Reaktionen, Katalyse;Organometallchemie;Chemische Labormethoden, Stöchiometrie
Science of Synthesis Reference Libraries
Übergeordnete Publikation
Titel: Science of Synthesis
DOI: 10.1055/b-00000101
Reihenherausgeber: Fürstner, A. (Editor-in-Chief); Carreira, E. M.; Faul, M.; Kobayashi, S.; Koch, G.; Molander, G. A.; Nevado, C.; Trost, B. M.; You, S.-L.
Typ: Mehrbändiges Werk
Abstract
Ligand-promoted, copper-catalyzed, Ullmann-type couplings of aryl halides (I, Br, Cl) with various nucleophiles, including amines, hetarenes, amides, hydrazines, alcohols, phenols, thiols, sulfinates, and active methylene compounds, are reviewed in this chapter. Considerable attention has been paid to demonstrate the powerful acceleration effect of second-generation oxalic amides as ligands in modern Ullmann-type couplings. Under these catalyst systems, less-reactive but inexpensive (het)aryl chlorides can be employed as coupling partners. Moreover, the catalyst loading for coupling of aryl iodides and bromides can be reduced to <1 mol% in most cases.
Schlüsselwörter
oxalic amides - amino acids - diamines - copper catalysts - acceleration effect - cross coupling - aryl halides - amines - hetarenes - alcohols - phenols - thiols - sulfinates - active methylene compounds- 22 Abdine RAA, Kurpik G, Walczak A, Aeash SAA, Stefankiewicz AR, Monnier F, Taillefer M. J. Catal. 2019; 376: 119
- 32 Parmar U, Somvanshi D, Kori S, Desai AA, Dandela R, Maity DK, Kapdi AR. J. Org. Chem. 2021; 86: 8900
- 45 Filipski KJ, Kohrt JT, Casimiro-Garcia A, Van Huis CA, Dudley DA, Cody WL, Bigge CF, Desiraju S, Sun S, Maiti SN, Jaber MR, Edmunds JJ. Tetrahedron Lett. 2006; 47: 7677