Reaction of a polyphosphino ruthenium(II) acetate complex with Grignard reagents: Halogenation, alkylation and β-elimination

Joseph J. Gair, Alexi J. Young, Jeremiah J. Scepaniak, Peter M. Simone, Chen T. Chau, Alicia A. Peterson, Elizabeth M. Nesset Ferguson, Williamson N. Oloo, Daniel T. Welna, Jonathan I. Siverson, Lothar M. Stahl, Chris P. Schaller

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Abstract

(PMe3)4Ru(H)OAc has been prepared from (PPh3)3Ru(H)OAc via phosphine exchange followed by solvent partitioning between acetonitrile and pentane. Complexes of the type (PMe3)4Ru(H)R (R = Et, nPr, nBu, iBu, H) have been synthesized through reaction with the corresponding Grignard reagents, RMgCl, and were found to be moderately stable provided the alkyl group is primary. Treatment with bulkier alkylmagnesium chlorides led instead to the dihydrido complex (PMe3)4RuH2. In some cases, the reaction was complicated by transfer of halide from the Grignard reagent to form, for example, (PMe3)4Ru(H)Cl.

Original languageEnglish (US)
Pages (from-to)42-47
Number of pages6
JournalJournal of Organometallic Chemistry
Volume801
DOIs
StatePublished - Jan 1 2016

Bibliographical note

Funding Information:
This work was supported by grants from the Petroleum Research Fund ( PRF#36323-GB3 ) and Research Corporation ( CC5065 ). In addition, we are grateful for funding from the National Science Foundation ( CHE-9724458 ) for the purchase of an inert atmosphere glovebox. Support was also received from the Council on Undergraduate Research (EMN, made possible by the Merck Company Foundation ). The authors would like to acknowledge Alfa Aesar for a gift of ruthenium chloride during the initial stage of the work. The authors wish to thank Amy Zweber, Dan Ferraro, Haosen Wang, and Adam Westman for experimental assistance. We are especially indebted to Michael Silver for his generous encouragement of this project.

Publisher Copyright:
© 2015 Elsevier B.V.

Keywords

  • Grignard reagents
  • Hydride complexes
  • Phosphine complexes
  • Ruthenium(II)

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