期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 22, 期 25, 页码 8466-8470出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201601292
关键词
boron; carboranes; cross-coupling; palladium; platinum
资金
- Department of Chemistry and Biochemistry at UCLA
- NSF [CHE-1048804]
In contrast to the plethora of metal-catalyzed cross-coupling methods available for the installation of functional groups on aromatic hydrocarbons, a comparable variety of methods are currently not available for icosahedral carboranes, which are boron-rich three-dimensional aromatic analogues of aryl groups. Part of this is due to the limited understanding of the elementary steps for cross-coupling involving carboranes. Here, we report our efforts in isolating metal-boryl complexes to further our understanding of one of these elementary steps, oxidative addition. Structurally characterized examples of group 10 M-B bonds featuring icosahedral carboranes are completely unknown. Use of mercurocarboranes as a reagent to deliver M-B bonds saw divergent reactivity for platinum and palladium, with a Pt-B bond being isolated for the former, and a rare Pd-Hg bond being formed for the latter.
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