Recent Developments in the Synthesis and Applications of Rhodium and Iridium Complexes Bearing
            <i>N</i>
            ‐Heterocyclic Carbene Ligands

Poyatos, Macarena; Guisado‐Barrios, Gregorio; Peris, Eduardo

doi:10.1002/9783527671229.ch10

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Catalysis By Carbene Complexes Of Transition Metals1

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Cited by 3 publications

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“…Today, this type of catalysis is now widely utilized (see e.g., the following reviews 21,26,30,395,405,406 ). The reaction center in the complex is an electrophilic metal atom.…”

Section: Catalysis By Carbene Complexes Of Transition Metalsmentioning

confidence: 99%

Synthesis and properties of heteroaromatic carbenes of the imidazole and triazole series and their fused analogues

Коротких¹,

Cowley²,

Clyburne³

et al. 2017

Arkivoc

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“…Today, this type of catalysis is now widely utilized (see e.g., the following reviews 21,26,30,395,405,406 ). The reaction center in the complex is an electrophilic metal atom.…”

Section: Catalysis By Carbene Complexes Of Transition Metalsmentioning

confidence: 99%

Synthesis and properties of heteroaromatic carbenes of the imidazole and triazole series and their fused analogues

Коротких¹,

Cowley²,

Clyburne³

et al. 2017

Arkivoc

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New Stable and Persistent Acyclic Diaminocarbenes

Schulz

Weismann

Wallbaum

et al. 2015

Chemistry A European J

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The portfolio of acyclic diaminocarbenes (ADACs) has been substantially expanded, owing to the synthesis of eleven new formamidinium salts, mostly of the type [(iPr2N)CH(NRR')][PF6], for use as immediate carbene precursors. The corresponding ADACs (iPr2N)C(NRR') were sufficiently stable for isolation in the case of NRR' = 2-methylpiperidino (13), 3-methylpiperidino (14), 4-methylpiperidino (15), morpholino (17) and NiPrPh (20), but had to be trapped in situ in the case of NRR' = 2,2,6,6-tetramethylpiperidino (12) and NiPrMe (19). The tetraaryl-substituted ADACs (Ph2N)2C (22) and (Ph2N)C[N(C6F5)2] (24) also could only be generated and trapped in situ. Trapping with elemental selenium was particularly efficient, affording the corresponding selenourea derivative in all cases, whereas trapping with [{Rh(μ-Cl)(cod)}2] did not work for 12 and 24. The (77)Se NMR chemical shifts, δ((77)Se), of the selenourea compounds derived from the new ADACs lie in the range 450-760 ppm, which indicates a much higher electrophilicity and π-accepting capability of ADACs in comparison with NHCs, which typically exhibit δ((77)Se)<200 ppm. The extreme low-field shift of 758 ppm observed for 12Se can be rationalised by the results of DFT calculations, which revealed that ADAC 12 has a minimum energy conformation with the 2,2,6,6-tetramethylpiperidino unit perpendicular to the N2C plane, which suppresses the π donation of this amino group and causes an unusually low LUMO energy and high electrophilicity.

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Isolation and Structures of 1,2,3‐Triazole‐Derived Mesoionic Biscarbenes with Bulky Aromatic Groups

et al. 2016

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Recent Developments in the Synthesis and Applications of Rhodium and Iridium Complexes Bearing N ‐Heterocyclic Carbene Ligands

Cited by 3 publications

References 224 publications

Synthesis and properties of heteroaromatic carbenes of the imidazole and triazole series and their fused analogues

Synthesis and properties of heteroaromatic carbenes of the imidazole and triazole series and their fused analogues

New Stable and Persistent Acyclic Diaminocarbenes

Isolation and Structures of 1,2,3‐Triazole‐Derived Mesoionic Biscarbenes with Bulky Aromatic Groups

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Recent Developments in the Synthesis and Applications of Rhodium and Iridium Complexes Bearing N ‐Heterocyclic Carbene Ligands

Cited by 3 publications

References 224 publications

Synthesis and properties of heteroaromatic carbenes of the imidazole and triazole series and their fused analogues

Synthesis and properties of heteroaromatic carbenes of the imidazole and triazole series and their fused analogues

New Stable and Persistent Acyclic Diaminocarbenes

Isolation and Structures of 1,2,3‐Triazole‐Derived Mesoionic Biscarb­enes with Bulky Aromatic Groups

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Product

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Isolation and Structures of 1,2,3‐Triazole‐Derived Mesoionic Biscarbenes with Bulky Aromatic Groups