Synthesis of Fe-C≡C-M complexes through condensation of Fe-C≡C-H with M-H or M-NMe2

Xinhong Gu, Michael Sponsler

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The iron acetylide Cp*(dppe)FeC≡CH (Cp* = η5-C5Me5, dppe = Ph2PCH 2CH2PPh2) reacted with [Cp2Zr(H)Cl] n (Schwartz's reagent, Cp = η5-C5H 5) to produce the C≡C-bridged complex Cp*(dppe)Fe- C≡CZrClCp2 in nearly quantitative yield instead of the expected CH=CH-bridged hydrozirconation product. The bulky ligand set around iron is postulated to prevent the addition of hydride at the carbon α to the metal center. Reaction of Cp*(dppe)FeC≡CH with (dimethylamino)- trimethyltin gave the condensed product Cp*(dppe)Fe-C≡CSnMe 3 in nearly quantitative yield.

Original languageEnglish (US)
Pages (from-to)5920-5923
Number of pages4
JournalOrganometallics
Volume17
Issue number26
StatePublished - Dec 21 1998

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Condensation
Iron
condensation
methylidyne
iron
synthesis
products
Hydrides
hydrides
reagents
Carbon
Metals
Ligands
ligands
carbon
metals
Schwartz reagent
trimethyltin

ASJC Scopus subject areas

  • Organic Chemistry
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

Cite this

Synthesis of Fe-C≡C-M complexes through condensation of Fe-C≡C-H with M-H or M-NMe2 . / Gu, Xinhong; Sponsler, Michael.

In: Organometallics, Vol. 17, No. 26, 21.12.1998, p. 5920-5923.

Research output: Contribution to journalArticle

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abstract = "The iron acetylide Cp*(dppe)FeC≡CH (Cp* = η5-C5Me5, dppe = Ph2PCH 2CH2PPh2) reacted with [Cp2Zr(H)Cl] n (Schwartz's reagent, Cp = η5-C5H 5) to produce the C≡C-bridged complex Cp*(dppe)Fe- C≡CZrClCp2 in nearly quantitative yield instead of the expected CH=CH-bridged hydrozirconation product. The bulky ligand set around iron is postulated to prevent the addition of hydride at the carbon α to the metal center. Reaction of Cp*(dppe)FeC≡CH with (dimethylamino)- trimethyltin gave the condensed product Cp*(dppe)Fe-C≡CSnMe 3 in nearly quantitative yield.",
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N2 - The iron acetylide Cp*(dppe)FeC≡CH (Cp* = η5-C5Me5, dppe = Ph2PCH 2CH2PPh2) reacted with [Cp2Zr(H)Cl] n (Schwartz's reagent, Cp = η5-C5H 5) to produce the C≡C-bridged complex Cp*(dppe)Fe- C≡CZrClCp2 in nearly quantitative yield instead of the expected CH=CH-bridged hydrozirconation product. The bulky ligand set around iron is postulated to prevent the addition of hydride at the carbon α to the metal center. Reaction of Cp*(dppe)FeC≡CH with (dimethylamino)- trimethyltin gave the condensed product Cp*(dppe)Fe-C≡CSnMe 3 in nearly quantitative yield.

AB - The iron acetylide Cp*(dppe)FeC≡CH (Cp* = η5-C5Me5, dppe = Ph2PCH 2CH2PPh2) reacted with [Cp2Zr(H)Cl] n (Schwartz's reagent, Cp = η5-C5H 5) to produce the C≡C-bridged complex Cp*(dppe)Fe- C≡CZrClCp2 in nearly quantitative yield instead of the expected CH=CH-bridged hydrozirconation product. The bulky ligand set around iron is postulated to prevent the addition of hydride at the carbon α to the metal center. Reaction of Cp*(dppe)FeC≡CH with (dimethylamino)- trimethyltin gave the condensed product Cp*(dppe)Fe-C≡CSnMe 3 in nearly quantitative yield.

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