1, 1′‐Di(arylamino)ferrocenes. A New Family of Privileged [N, N] Ligands with Tunable Steric Control for Applications in Homogeneous Organometallic Catalysis and Coordination Chemistry

Abstract

Abstract Fe[(C 5 H 4 )NHPh] 2 ( 2a ) was prepared from 1, 1′‐dibromoferrocene and N ‐phenylacetamide by an Ullmann reaction and subsequent basic solvolysis of the coupling product Fe[(C 5 H 4 )N(COMe)Ph] 2 ( 1a ). This solvolysis failed in the case of the bulkier Fe[(C 5 H 4 )N(COMe)(2, 6‐Me 2 C 6 H 3 )] 2 ( 1b ). Fe[(C 5 H 4 )N(2, 6‐Me 2 C 6 H 3 )] 2 ( 2b ) and Fe[(C 5 H 4 )N(2, 4, 6‐ i Pr 3 C 6 H 2 )] 2 ( 2c ) were obtained by Hartwig‐Buchwald type cross‐coupling of 1, 1′‐diaminoferrocene with the respective aryl bromide.