What question did this study set out to answer?

To synthesize a series of novel iridium bis(phosphinite) p-XPCP pincer complexes and evaluate their catalytic efficiency in the transfer dehydrogenation of alkanes.

January 24, 2004Journal of the American Chemical Society

Iridium Bis(phosphinite) p-XPCP Pincer Complexes: Highly Active Catalysts for the Transfer Dehydrogenation of Alkanes

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Authors

IGInigo Göttker‐SchnetmannUniversity of Konstanz PWPeter S. WhiteUniversity of North Carolina at Chapel Hill MBMaurice BrookhartRutgers, The State University of New Jersey

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Implication

Experimental study demonstrates high catalytic activity of iridium pincer complexes in alkane transfer dehydrogenation, indicating efficient pathways for alkane functionalization.

Key Points

To synthesize a series of novel iridium bis(phosphinite) p-XPCP pincer complexes and evaluate their catalytic efficiency in the transfer dehydrogenation of alkanes.
Synthesized six para-substituted bis(phosphinite) p-XPCPIrHCl pincer complexes with diverse electronic properties (X = MeO, Me, H, F, C6F5, and 3,5-bis(trifluoromethyl)phenyl).
Activated the precatalysts with sodium tert-butoxide in cyclooctane and tert-butylethylene at a 3030:3030:1:1.1 substrate-to-precatalyst ratio at 200 °C.
Catalysts achieved turnover numbers (TONs) between 1400 and 2200, reaching up to 72% conversion of tert-butylethylene.
Initial turnover frequencies (TOFs) reached between 1.6 and 2.4 s⁻¹ at 200 °C during the transfer dehydrogenation of cyclooctane.

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Göttker‐Schnetmann et al. (2004) studied this question.

synapsesocial.com/papers/6a764f69963158a977bcbde3 https://doi.org/10.1021/ja0385235

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Implication

Experimental study demonstrates high catalytic activity of iridium pincer complexes in alkane transfer dehydrogenation, indicating efficient pathways for alkane functionalization.

Iridium Bis(phosphinite) p-XPCP Pincer Complexes: Highly Active Catalysts for the Transfer Dehydrogenation of Alkanes

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Cite This Study

Iridium Bis(phosphinite) p-XPCP Pincer Complexes: Highly Active Catalysts for the Transfer Dehydrogenation of Alkanes

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Cite This Study

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