6533b839fe1ef96bd12a6552

RESEARCH PRODUCT

Screening of ligands for the Ullmann synthesis of electron-rich diaryl ethers

Nicola OttoTill Opatz

subject

chemistry.chemical_classificationC–O bond formationDenticityBase (chemistry)catalysisArylOrganic Chemistrynucleophilic aromatic substitutiondiaryl ethersUllmann-type couplingCombinatorial chemistryFull Research PaperCatalysislcsh:QD241-441Chemistrychemistry.chemical_compoundchemistrylcsh:Organic chemistryNucleophilic aromatic substitutionPotassium phosphateOrganic chemistrylcsh:QAcetonitrilelcsh:ScienceCopper iodide

description

In the search for new ligands for the Ullmann diaryl ether synthesis, permitting the coupling of electron-rich aryl bromides at relatively low temperatures, 56 structurally diverse multidentate ligands were screened in a model system that uses copper iodide in acetonitrile with potassium phosphate as the base. The ligands differed largely in their performance, but no privileged structural class could be identified.

10.3762/bjoc.8.122https://doaj.org/article/ae811b043072426ab98dfbc03f5d6609