Ruthenium(II) complexes bearing (NNN) ligand: catalytic evaluation of different solvent-mediated coordination modes

Pellegrino, Sara; Facchetti, Giorgio; Gandolfi, Raffaella; Fusè, Marco; Erba, Emanuela; Rimoldi, Isabella

doi:10.1139/cjc-2017-0487

Cited by 6 publications

(6 citation statements)

References 43 publications

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“…78 In 2018, Rimoldi and co-workers reported chiral NNN-L17 which derived from chiral diamine and proline. 79…”

Section: Nnn-type Ligandsmentioning

confidence: 99%

“…137 In 2000, Braunstein 82 and co-workers reported the complexation of NPN-L3 and [RuCl 2 (p-cymene)] 2 , and dimerized ruthenium complex NPN-Ru-1 was separated and characterized. In 2018, Rimoldi 79 and co-workers prepared dimerized NNN-Ru-6 by reacting NNN-L17 with the same ruthenium precursor (Scheme 4). In 1994, Nishiyama prepared NNN-Ruethylene by reacting i-Pr Pybox with [RuCl 2 (p-cymene)] in the presence of ethylene.…”

Section: Ruthenium and Osmiummentioning

confidence: 99%

“…This ligand was demonstrated to be successful in Ru-catalyzed ATH of ketones . In 2018, Rimoldi and co-workers reported chiral NNN-L17 which derived from chiral diamine and proline …”

Section: Overview Of Chiral Tridentate Ligands For Hydrogenationmentioning

confidence: 99%

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Chiral Tridentate Ligands in Transition Metal-Catalyzed Asymmetric Hydrogenation

2021

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Asymmetric hydrogenation (AH) of double bonds has been one of the most effective methods for the preparation of chiral molecules and for the synthesis of important chiral building blocks. In the past 60 years, noble metals with bidentate ligands have shown marvelous reactivity and enantioselectivity in asymmetric hydrogenation of a series of prochiral substrates. In recent years, developing chiral tridentate ligands has played an increasingly important role in AH. With modular frameworks and a variety of functionalities on the side arms, chiral tridentate ligand complexes enable both reactivities and stereoselectivities. Although great achievements have been made for noble metal catalysts with chiral tridentate ligands since the 1990s, the design of chiral tridentate ligands for earth abundant metal catalysts has still been in high demand. This review summarizes the development of chiral tridentate ligands for homogeneous asymmetric hydrogenation. The philosophy of ligand design and the reaction mechanisms are highlighted and discussed as well.

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“…78 In 2018, Rimoldi and co-workers reported chiral NNN-L17 which derived from chiral diamine and proline. 79…”

Section: Nnn-type Ligandsmentioning

confidence: 99%

Section: Ruthenium and Osmiummentioning

confidence: 99%

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Chiral Tridentate Ligands in Transition Metal-Catalyzed Asymmetric Hydrogenation

2021

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“…[37] Compound 44 was also used as a template for the development of peptidebased catalysts in Henry reactions [38] and asymmetric transfer hydrogenations. [39] Among δ-AAs, Geyer's research group reported on the synthesis of the bicyclic core-non coded AA 46, used as β-turn mimic (Figure 7). [40] In particular, they synthesized different peptidomimetics mimicking Foldon β-hairpin protein by using 46 instead of AspÀ Gly loop that does not stabilize in a proper way the natural β-hairpin, essential for Foldon protein function.…”

Section: Delta Aasmentioning

confidence: 99%

Fishing in the Toolbox of Cyclic Turn Mimics: a Literature Overview of the Last Decade

et al. 2021

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Dedicated to Prof. Franco Cozzi for its 70th birthday.The main goal in developing peptidomimetics is the stabilization of the bioactive conformation of peptides. Among all the secondary structures, turns are of paramount importance. This review highlights the recent advances in the design and synthesis of cyclic turn mimics. Both amino acids, carbo-and hetero-cyclic scaffolds have been considered, focusing on their use in the preparation of peptidomimetics and on their ability to induce γ-, β-, and α-turns.

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“…To enhance the catalytic performance of asymmetric catalytic boron conjugate addition, tripodal ligands, based on the tetrahydroquinoline or quinolone scaffold, were incorporated into the Cu II complexes. This successful combination led to keto–alcohol derivatives in an enantiomerically enriched form.…”

Section: Introductionmentioning

confidence: 99%

Cascade Reaction by Chemo‐ and Biocatalytic Approaches to Obtain Chiral Hydroxy Ketones and anti 1,3‐Diols

et al. 2018

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A chemo‐ and biocatalytic cascade approach was applied for the stereoselective synthesis of hydroxy ketones and the corresponding 1,3‐diols. A new class of tridentate N,N,O ligands was used with copper(II) complexes for the asymmetric β‐borylation of α,β‐unsaturated compounds. The complex containing ligand L5 emerged as the best performer, and it gave the organoborane derivatives with good ee values. The corresponding keto–alcohol compounds were then bioreduced by yeasts. The biotransformation set up with Rhodotorula rubra allowed (R)‐keto–alcohols and (S,S)‐diols to be obtained with up to 99 % ee and up to 99 % de in favor of the anti enantiomers.

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Ruthenium(II) complexes bearing (NNN) ligand: catalytic evaluation of different solvent-mediated coordination modes

Cited by 6 publications

References 43 publications

Chiral Tridentate Ligands in Transition Metal-Catalyzed Asymmetric Hydrogenation

Chiral Tridentate Ligands in Transition Metal-Catalyzed Asymmetric Hydrogenation

Fishing in the Toolbox of Cyclic Turn Mimics: a Literature Overview of the Last Decade

Cascade Reaction by Chemo‐ and Biocatalytic Approaches to Obtain Chiral Hydroxy Ketones and anti 1,3‐Diols

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