title: Iron-catalyzed coupling of aryl sulfamates and aryl/vinyl tosylates with aryl Grignards.
abstract: The iron-catalyzed coupling of aryl sulfamates and tosylates with aryl Grignard reagents is reported for the first time. The methodology employs air-stable, low-cost FeF3·3H2O and the N-heterocyclic carbene ligand IPr·HCl as the preligand to form a long-lived catalyst upon treatment with aryl Grignards. The reaction provides a range of cross-coupled products in good-to-excellent yields. In contrast to previous reports with aryl chlorides, these reactions proceed with low levels of Grignard homocoupling regardless of the iron source.
authors.affiliation: Department of Chemistry, Indiana University , 800 East Kirkwood Avenue, Bloomington, Indiana 47405-7102, United States.
authors.forename: Toolika
authors.initials: T
authors.lastname: Agrawal
authors.forename: Silas P
authors.initials: SP
authors.lastname: Cook