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Iridium(I)-salicylaldiminato-cyclooctadiene complexes used as catalysts for phenylborylation |
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| Authors: | Zhu Yinghuai Koh Cheng Yan Chong Siow Hwei A Emi Monalisa Winata John A Maguire |
| Institution: | a Institute of Chemical and Engineering Sciences, 1, Pesek Road, Jurong Island, Singapore 627833, Singapore b Singapore Polytechnic, 500 Dover Road, Singapore 139651, Singapore c Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL 60115-2862, USA d Department of Chemistry, Southern Methodist University, Dallas, TX 75275-0314, USA |
| Abstract: | Iridium(I) salicylaldiminato-cyclooctadiene complexes, Ir(-o-O-C6H4-CH N-R)(cod) (R = CH2Ph (1), Ph (2); cod = 1,5-cyclooctadiene), have been prepared, characterized and used as catalysts for arylborylation via C-H activation. With 1 as a catalyst, isolated yields of up to 91% has been achieved for the borylation of benzene by bis(pinacolato)diboron in the presence of tetra-2-pyridinylpyrazine and an ionic liquid. The catalytic system could be recycled for at least three times without loss of activity. |
| Keywords: | Iridium(I) salicylaldiminato-cyclooctadiene complexes Arylborylation Catalyst recycle Ionic liquid |
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