An Improved Protocol for Palladium‐Catalyzed Alkoxycarbonylations of Aryl Chlorides with Alkyl Formates

Abstract

Abstract The palladium‐catalyzed alkoxycarbonylation of aryl and heteroaryl halides using butyl formate has been investigated. In the presence of palladium(II) acetate/ n ‐butylbis(1‐adamantyl)phosphine ( L1 ), and 1,8‐diazabicyclo[5.4.0]undec‐7‐ene (DBU) as base for the first time non‐activated chloroarenes can be conveniently carbonylated in good yields.