Facile generation of iridium PCcarbeneP pincer complexes via water elimination from an alcohol proligand. Issue 44 (27th October 2017)

• Record Type: Journal Article
• Authors: Sung, Simon; Young, Rowan D.
• Is Part Of: Dalton transactions. Volume 46:Issue 44(2017)
• Page Start: 15407
• Page End: 15414
• Publication Date: 2017-10-27
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c7dt03690f
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : We report the facile generation of Ir PCcarbene P pincer systems. Abstract : We report the facile generation of Ir PCcarbene P pincer systems. These systems are accessed from the reaction between [IrCl(COD)]2 and a bis(diphenyl)phenylene P(OH)P proligand (1 ) with concomitant dehydration, followed by salt metathesis/ligand exchange in the case of cationic examples. In contrast to previously reported double C–H activation synthetic strategies to access similar complexes, accessing Ir PCcarbene P complexes through dehydration proceeds rapidly at room temperature and provides the first example of the incorporation of phosphino aryl substituents. The generated complexes are shown to possess the ability to activate inert C–H bonds and partake in ligand cooperativity. Mechanistic evidence suggests that divergent C–H and O–H activation pathways of ligand1 ultimately lead to the same Ir PCcarbene P product (2 ). It is hoped that the stability and synthetic accessibility of these complexes will encourage their increased use in catalyst surveys.