Extremely electron-rich, boron-functionalized, icosahedral carborane-based phosphinoboranes

Alexander M. Spokoyny, Calvin D. Lewis, Georgiy Teverovskiy, Stephen L. Buchwald

Research output: Contribution to journalArticlepeer-review

95 Scopus citations

Abstract

We have prepared the first examples of B9-connected trivalent aryl and alkyl phosphinoborane species via Pd-catalyzed phosphination of 9-iodo-meta-carborane. Our studies highlight the unique electronic features of the B9-connected meta-carboranyl moiety as compared to its C1-based analogue. This work suggests that the B9-functionalized meta-carboranyl substituent in these ligands exhibits more electron-releasing character than any other known carbon-based substituent, ultimately laying the foundation for a new class of phosphine ligands with extremely electron-rich character.

Original languageEnglish
Pages (from-to)8478-8481
Number of pages4
JournalOrganometallics
Volume31
Issue number24
DOIs
StatePublished - Dec 24 2012

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