What question did this study set out to answer?

Investigate the coordination and reaction chemistry of the novel pincer ligand 1,6-bis((tert-butylphosphino)methyl)-1,3,5-cycloheptatriene with iridium precursors.

April 23, 1998Organometallics

Iridium Chemistry of 1,6-Bis((tert-butylphosphino)methyl)-1,3,5-cycloheptatriene

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Authors

SNS. NemehUniversity of California, Santa Barbara RFRobert J. FlesherUniversity of California, Santa Barbara KGKarlheinz GierlingUniversity of California, Santa Barbara

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Implication

Experimental study demonstrates unusual ethyl migration and hydride transfer in cycloheptatriene iridium pincer complexes, revealing distinct synthetic routes for specific derivatives.

Key Points

Investigate the coordination and reaction chemistry of the novel pincer ligand 1,6-bis((tert-butylphosphino)methyl)-1,3,5-cycloheptatriene with iridium precursors.
Synthesized an iridium pincer complex through metalation at the C7 position using Ir(CO)xCl.
Treated the resulting complex with LiBEt3H, NaH, and NaBEt4 to probe subsequent rearrangement and substitution pathways.
Reaction with LiBEt3H yielded a product mixture arising from ethyl group migration and replacement of the chloride ligand with a hydride.
Reaction with NaH promoted dehydrochlorination followed by prototopic rearrangement.
Treatment with NaBEt4 selectively generated the corresponding ethyl derivative.

Cite This Study

Nemeh et al. (1998) studied this question.

synapsesocial.com/papers/6a90871da9a6d70ff18a5a28 https://doi.org/10.1021/om980045x

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Implication

Experimental study demonstrates unusual ethyl migration and hydride transfer in cycloheptatriene iridium pincer complexes, revealing distinct synthetic routes for specific derivatives.

Iridium Chemistry of 1,6-Bis((tert-butylphosphino)methyl)-1,3,5-cycloheptatriene

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Cite This Study

Iridium Chemistry of 1,6-Bis((tert-butylphosphino)methyl)-1,3,5-cycloheptatriene

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Cite This Study

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