The development and application of Cationic Iridium(I) complexes with N-Heterocyclic carbene ligands in homogeneous catalysis

Gellert Viktor Sipos

doi:10.4225/23/59f2b0f1c8e0b

The development and application of Cationic Iridium(I) complexes with N-Heterocyclic carbene ligands in homogeneous catalysis

Gellert Viktor Sipos

School of Molecular Sciences

Research output: Thesis › Doctoral Thesis

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Abstract

In homogeneous transition metal catalysis, coordinat1vely highly unsaturated complexes are often assumed to play a vital
role, but are rarely stable as such and are normally generated from suitable precatalysts. During my PhD studies, I have
employed N·heterocyclic carbene (NHC) ligands for the synthesis or unsaturated, yet isolable [(NHC)lr(COD))'" complexes.
When employed 1n lhe mtramolecular hydroammat1on these ((NHC)lr(CODW species show very high catalytic activity under
mild react on conditions. An enantiopure version of the catalyst system produces pyrrolidines with excellent enantioselectivities.
A serendipitous discovery led to the isolation of chloride-bridged Ir-Ag adducts during the attempted synthesis of these cations.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Dorta, Reto, Supervisor Koutsantonis, George, Supervisor
Award date	18 Oct 2017
DOIs	https://doi.org/10.4225/23/59f2b0f1c8e0b
Publication status	Unpublished - 2017

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10.4225/23/59f2b0f1c8e0b

THESIS - DOCTOR OF PHILOSOPHY - SIPOS Gellert Viktor - 2017 - Part 1
THESIS - DOCTOR OF PHILOSOPHY - SIPOS Gellert Viktor - 2017 - Part 2
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Cite this

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title = "The development and application of Cationic Iridium(I) complexes with N-Heterocyclic carbene ligands in homogeneous catalysis",

abstract = "In homogeneous transition metal catalysis, coordinat1vely highly unsaturated complexes are often assumed to play a vitalrole, but are rarely stable as such and are normally generated from suitable precatalysts. During my PhD studies, I haveemployed N·heterocyclic carbene (NHC) ligands for the synthesis or unsaturated, yet isolable [(NHC)lr(COD))'{"} complexes.When employed 1n lhe mtramolecular hydroammat1on these ((NHC)lr(CODW species show very high catalytic activity undermild react on conditions. An enantiopure version of the catalyst system produces pyrrolidines with excellent enantioselectivities.A serendipitous discovery led to the isolation of chloride-bridged Ir-Ag adducts during the attempted synthesis of these cations.",

keywords = "carbenes, hydroamination, NHC, iridium, Asymmetric catalysis, catalysis, coordinative unsaturation",

author = "Sipos, {Gellert Viktor}",

year = "2017",

doi = "10.4225/23/59f2b0f1c8e0b",

language = "English",

school = "The University of Western Australia",

}

TY - THES

T1 - The development and application of Cationic Iridium(I) complexes with N-Heterocyclic carbene ligands in homogeneous catalysis

AU - Sipos, Gellert Viktor

PY - 2017

Y1 - 2017

N2 - In homogeneous transition metal catalysis, coordinat1vely highly unsaturated complexes are often assumed to play a vitalrole, but are rarely stable as such and are normally generated from suitable precatalysts. During my PhD studies, I haveemployed N·heterocyclic carbene (NHC) ligands for the synthesis or unsaturated, yet isolable [(NHC)lr(COD))'" complexes.When employed 1n lhe mtramolecular hydroammat1on these ((NHC)lr(CODW species show very high catalytic activity undermild react on conditions. An enantiopure version of the catalyst system produces pyrrolidines with excellent enantioselectivities.A serendipitous discovery led to the isolation of chloride-bridged Ir-Ag adducts during the attempted synthesis of these cations.

AB - In homogeneous transition metal catalysis, coordinat1vely highly unsaturated complexes are often assumed to play a vitalrole, but are rarely stable as such and are normally generated from suitable precatalysts. During my PhD studies, I haveemployed N·heterocyclic carbene (NHC) ligands for the synthesis or unsaturated, yet isolable [(NHC)lr(COD))'" complexes.When employed 1n lhe mtramolecular hydroammat1on these ((NHC)lr(CODW species show very high catalytic activity undermild react on conditions. An enantiopure version of the catalyst system produces pyrrolidines with excellent enantioselectivities.A serendipitous discovery led to the isolation of chloride-bridged Ir-Ag adducts during the attempted synthesis of these cations.

KW - carbenes

KW - hydroamination

KW - NHC

KW - iridium

KW - Asymmetric catalysis

KW - catalysis

KW - coordinative unsaturation

U2 - 10.4225/23/59f2b0f1c8e0b

DO - 10.4225/23/59f2b0f1c8e0b

M3 - Doctoral Thesis

ER -