title: Preparation of tert-butyl esters via Pd-catalyzed tert-butoxycarbonylation of (hetero)aryl boronic acid derivatives.
abstract: A novel protocol to synthesize tert-butyl esters from boronic acids or boronic acid pinacol esters and di-t-butyl dicarbonate has been successfully achieved. The cross-coupling reactions can produce up to 94% yields by using palladium acetate and triphenylphosphine as catalyst system, dioxane as a solvent. Moreover, a wide range of substrates including benzenes, pyridines, and quinolines boronic acids or boronic acid pinacol esters can fit with this system as well.
authors.affiliation: The College of Chemistry and Molecular Engineering, Zhengzhou University , Zhengzhou, Henan 450001, PR China.
authors.forename: Xinjian
authors.initials: X
authors.lastname: Li
authors.forename: Dapeng
authors.initials: D
authors.lastname: Zou
authors.forename: Helong
authors.initials: H
authors.lastname: Zhu
authors.forename: Yaping
authors.initials: Y
authors.lastname: Wang
authors.forename: Jingya
authors.initials: J
authors.lastname: Li
authors.forename: Yangjie
authors.initials: Y
authors.lastname: Wu
authors.forename: Yusheng
authors.initials: Y
authors.lastname: Wu
mesh_terms: D001897:Boronic Acids / Q000737:chemistry*; D002073:Butanes / Q000138:chemical synthesis* / Q000737:chemistry; D002384:Catalysis; D004952:Esters; D010165:Palladium / Q000737:chemistry*
chemical_list: D001897:Boronic Acids; D002073:Butanes; D004952:Esters; D010165:Palladium