title: Corannulene ethers via Ullmann condensation.
abstract: Penta-aryloxycorannulene derivatives, which were previously considered difficult synthetic targets, are efficiently achieved via the Cu(I)-catalyzed Ullmann condensation reaction between 1,3,5,7,9-pentachlorocorannulene and a broad variety of substituted phenols. The reaction proceeds under air and mild conditions that are compatible even with 4-bromophenol. These findings open new avenues for easy preparation of other symmetrically substituted pentagonal building blocks that can be used for the preparation of new materials and new supramolecular architectures.
authors.affiliation: Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, Haifa 32000, Israel.
authors.forename: Renana
authors.initials: R
authors.lastname: Gershoni-Poranne
authors.forename: Doron
authors.initials: D
authors.lastname: Pappo
authors.forename: Ephrath
authors.initials: E
authors.lastname: Solel
authors.forename: Ehud
authors.initials: E
authors.lastname: Keinan
mesh_terms: D002384:Catalysis; D003300:Copper / Q000737:chemistry; D004987:Ethers / Q000138:chemical synthesis* / Q000737:chemistry; D015394:Molecular Structure; D011084:Polycyclic Aromatic Hydrocarbons / Q000138:chemical synthesis* / Q000737:chemistry; D013237:Stereoisomerism
chemical_list: D004987:Ethers; D011084:Polycyclic Aromatic Hydrocarbons; C434863:corannulene; D003300:Copper