Synthesis and Characterization of Dearomatized Pyridine‐Derived Alkyl‐Amido‐tert‐Butylphosphine Iron(II) Complexes

Neutral three‐coordinate iron alkylidenes of the form PN−Fe=CHR have been proposed as viable candidates for alkene metathesis. Indeed, during the final stages of preparing this current study, a separate report disclosed that dearomatized PN−Fe‐alkyl complexes are active precatalysts for ring‐opening...

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Bibliographic Details
Published in:European journal of inorganic chemistry 2024-04, Vol.27 (11), p.n/a
Main Authors: Gunasekera, Parami S., Paul, Sanchita, MacMillan, Samantha N., Lacy, David C.
Format: Article
Language:English
Subjects:
alkene metathesis
coordination chemistry
Iron
ligand design
Metathesis
organometallic
Synthesis
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Summary:Neutral three‐coordinate iron alkylidenes of the form PN−Fe=CHR have been proposed as viable candidates for alkene metathesis. Indeed, during the final stages of preparing this current study, a separate report disclosed that dearomatized PN−Fe‐alkyl complexes are active precatalysts for ring‐opening metathesis polymerization (ROMP) of norbornene implicating PN−Fe=CHR species as possible intermediates. In yet another separate report, we prepared Zn analogues of PN−Fe‐alkyl complexes and herein provide an account for the synthesis, characterization, and reactivity of some new iron complexes with the same tBu substituted PN platform. Little is known about the reactivities of [PN‘−Fe−CH2R] complexes. Until recently, there was little reason to suspect anything interesting about them. However, recent ROMP precatalysts of the [PN‘−Fe−CH2R] formulation from the Milstein group justify fundamental coordination and reactivity studies and herein detail our own efforts.
ISSN:1434-1948
1099-0682
DOI:10.1002/ejic.202300757