We report a general, direct C–Harylation of anilide derivatives using reusable palladium or copper oxide on magnetite as heterogeneous precatalysts. Highly selective ortho and meta arylations are achieved using electronically and sterically diverse diaryliodonium salts. Catalytically active soluble species from the heterogeneous precursors were detected by experimental techniques. Preliminary mechanistic
Utilization of a Copper on Iron Catalyst for the Synthesis of Biaryl Systems and Benzoxazines via Oxidative Arylation of Anilide Derivatives
作者:Zoltán Novák、Anna Székely、Ádám Sinai、Edina Tóth
DOI:10.1055/s-0033-1338642
日期:——
Heterogeneous copper on iron catalyst serves as an efficient alternative copper source for arylation reactions using hypervalent iodonium salts. The copper(0) catalyst affords meta-arylation of pivalanilides, while 2-ethynylanilides undergo oxidative carboarylation–ring closure with diaryliodonium salts. Heterogeneous copper on iron catalyst serves as an efficient alternative copper source for arylation reactions