Iridium complexes synthesis

S. Lamansky, P. Djurovich, D. Murphy, F. Abdel-Razzaq, H.-E. Lee, C. Adachi, P.E. Burrows, S.R. Forrest, and M.E. Thompson, Highly phosphorescent te-cyclometalated iridium complexes synthesis, photophysical characterization, and use in organic light emitting diodes, J. Am. Chem. Soc., 123 4304—4312 (2001). 

Anthrylmethyl-functionalized cyclopentadienyl iridium complexes, synthesis, 7, 368-369 Antibacterial agents, discovery and characteristics, 1, 894 Antibiotics, via enyne metathesis, 11, 297-298 Anticancer compounds... 

Hetero-Diels—Alder reactions, via cobalt(III) complexes, 7,44 Heterodienes, with iron, 6, 145 if- Heterodienes, with tantalum, 5, 176 Heterodinuclear iridium complexes, synthesis, 7, 371 Heterodinuclear iridium—platinum complexes, synthesis and characterization, 7, 380... 

Lamansky, S. Djurovich, P. Murphy, D. Abdel-Razzaq, F. Lee, H.-E. Adachi, C Burrows, B. E. Forrest, S. R. (2001). Highly Phosphorescent Bis-Cyclometalated Iridium Complexes Synthesis, Photophysical Characterization, and Use in Organic Light Emitting Diodes. Journal of American Chemical Society, Vol. 123, pp. 4304-4312. 

In 1998, Ruiz et al. reported the synthesis of new chiral dithioether ligands based on a pyrrolidine backbone from (+ )-L-tartaric acid. Their corresponding cationic iridium complexes were further evaluated as catalysts for the asymmetric hydrogenation of prochiral dehydroamino acid derivatives and itaconic acid, providing enantioselectivities of up to 68% ee, as shown in Scheme 8.18. 

Following this observation, a general approach for the synthesis of pincer-type methylene arenium compounds was developed (Scheme 3.4). Upon reaction of the methyl rhodium (or iridium) complexes 5 with a slight excess of triflic acid, dihydrogen (not methane ) was evolved to form the methylene arenium complexes 4a.11 Thus, the methylene arenium form is clearly preferred over the benzylic M(III) form, in which the positive charge is localized at the metal center. 

Indeed, the imine intermediate 142 in the synthesis of metolachlor has been reduced in 97% ee using an iridium complex of the phospholane-containing ligand 55 [80]. 

W Zhu, C Liu, L Su, W Yang, M Yuan, and Y Cao, Synthesis of new iridium complexes and their electrophosphorescent properties in polymer light-emitting diodes, J. Mater. Chem., 13 50-55, 2003. 

Oro LA, Claver C (eds) (2009) Iridium complexes in organic synthesis. VCH, Weinheim... 

Aqueous organometalHc catalysis allows the use of NH3-solutions in water for the direct synthesis of amines from olefins in a combined hydroformylation/reductive amination procedure (Scheme 4.19). The hydroformylation step was catalyzed by the proven Rh/TPPTS or Rh/BINAS (44) catalysts, while the iridium complexes formed from the same phosphine ligands and [ IrCl(COD) 2] were found suitable for the hydrogenation of the intermediate imines. With sufficiently high NH3/olefin ratios (8/1) high selectivity towards the formation of primary amines (up to 90 %) could be achieved, while in an excess of olefin the corresponding... 

Iridium Complexes in Organic Synthesis. Edited by Luis A. Oro and Carmen Qaver Copyright 2009 WILEY-VCH Verlag GmbH Co. KGaA, Weinheim I nRN 978-V 27- 199( -1... 

Perhaps most dramatically of all, for the first time, bis(carbene)-substituted iridium complexes, such as [Ir(cod)(NHC)2] (NHC = 1,3-dimethyl- or 1,3-dicyclohexylimidazolin-2-ylidene] were successfully used by Herrmann and coworkers as C—H-activation catalysts in the synthesis of arylboronic acids starting from pinacolborane and arene derivatives [46]. 

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