Chromophoric Lewis Base Adducts of Methyltrioxorhenium: Synthesis, Catalysis and Photochemistry

Hauser, Simone A.; Korinth, Valentina; Herdtweck, Eberhardt; Cokoja, Mirza; Herrmann, Wolfgang A.; Kühn, Fritz E.

doi:10.1002/ejic.201000348

Cited by 16 publications

(7 citation statements)

References 37 publications

(54 reference statements)

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“…The coupling product was purified by silica‐gel column chromatography. All the spectroscopic data for the coupling products 7 , 8 , and 11 ,44 9 ,45 10 ,46 12 ,47 13 ,42 14 ,41 15 ,48 and 16 49 agreed with those previously reported.…”

Section: Methodssupporting

confidence: 90%

Bulky Monodentate Biphenylarsine Ligands: Synthesis and Evaluation of Their Structure Effects in the Palladium‐Catalyzed Heck Reaction

2015

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Biphenyl‐based arsine ligands were prepared in two‐step fashion by Pd‐catalyzed arsination and microwave‐assisted Suzuki–Miyaura coupling, providing sterically demanding arsine ligands in overall isolated yields up to 82 % as air‐stable solids. Short reaction times were achieved with the assistance of microwave irradiation in the direct and simple described protocol for the synthesis of biarylarsine ligands. The activities of the biphenyl arsine ligands were explored in Pd‐catalyzed Heck coupling. As a general trend, the ligands with “blocked” ortho‐positions on the non‐arsine‐containing ring of the biphenyl backbone performed more efficiently in the coupling reaction. This catalytic system allowed several interesting stilbenes to be obtained in very good yields.

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Section: Methodssupporting

confidence: 90%

Bulky Monodentate Biphenylarsine Ligands: Synthesis and Evaluation of Their Structure Effects in the Palladium‐Catalyzed Heck Reaction

2015

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“…In general, the origins of short-and long-wavelength absorption bands are associated to the transitions from ground (S 0 )state to second (S 2 )and first (S 1 )excited states,respectively. [22] The S 2 state of f-TPE-PPy is primarily localized on the biphenylpyridine fragment, whereas the S 1 state is delocalized onto the entire molecular backbone,a ttributed to the electronic communication across the vinyl group and/or transannular gap.Likewise, f-TPE-PEPy shows amain absorption peak at 323 nm, which is close to the absorption maximum of the biphenyl-vinyl-pyridine fragment (325 nm), [24] suggesting this absorption band is associated with the S 0 -S 2 transition. Thel ow-energy absorption from S 0 -S 1 transition is hardly detectable for f-TPE-PEPy.…”

mentioning

confidence: 81%

Multichannel Conductance of Folded Single‐Molecule Wires Aided by Through‐Space Conjugation

Chen

Wang

et al. 2015

Angew Chem Int Ed

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Deciphering charge transport through multichannel pathways in single-molecule junctions is of high importance to construct nanoscale electronic devices and deepen insight into biological redox processes. Herein, we report two tailor-made folded single-molecule wires featuring intramolecular π-π stacking interactions. The scanning tunneling microscope (STM) based break-junction technique and theoretical calculations show that through-bond and through-space conjugations are integrated into one single-molecule wire, allowing for two simultaneous conducting channels in a single-molecule junction. These folded molecules with stable π-π stacking interaction offer conceptual advances in single-molecule multichannel conductance, and are perfect models for conductance studies in biological systems, organic thin films, and π-stacked columnar aggregates.

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“…One relevant example is methyltrioxorhenium (MTO), which is a versatile catalyst in oxidation and hydrogen‐transfer reactions including olefin epoxidation . A series of Lewis adducts of MTO have recently been obtained by reaction of the parent compound with pyridine derivatives and their photochemical properties and performance in epoxidation of 1‐octene have been studied . In the same context, Abu–Omar has prepared and structurally characterized phosphine adducts of methyldioxorhenium(V) (MDO) and has used them to support his proposal that MDO is the active catalyst in the dehydrogenation of vicinal diols with MTO …”

Section: Synthesis and Structures: A Systematic Overview Of D‐block Ementioning

confidence: 99%

Methyl Complexes of the Transition Metals

Campos

López‐Serrano

Peloso

et al. 2016

Chemistry A European J

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Organometallic chemistry can be considered as a wide area of knowledge that combines concepts of classic organic chemistry, i.e. based essentially on carbon, with molecular inorganic chemistry, especially with coordination compounds. Transition metal methyl complexes probably represent the simplest and most fundamental way to view how these two major areas of chemistry combine and merge into novel species with intriguing features in terms of reactivity, structure, and bonding. Citing more than 500 bibliographic references, this review aims to offer a concise view of recent advances in the field of transition metal complexes containing M-CH3 fragments. Taking into account the impressive amount of data that are continuously provided by organometallic chemists in this area, this review is mainly focused on results of the last 5 years. After a panoramic overview on M-CH3 compounds of groups 3 to 11 which includes the most recent landmark findings in this area, two further sections are dedicated to methyl-bridged complexes and reactivity.

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Chromophoric Lewis Base Adducts of Methyltrioxorhenium: Synthesis, Catalysis and Photochemistry

Cited by 16 publications

References 37 publications

Bulky Monodentate Biphenylarsine Ligands: Synthesis and Evaluation of Their Structure Effects in the Palladium‐Catalyzed Heck Reaction

Bulky Monodentate Biphenylarsine Ligands: Synthesis and Evaluation of Their Structure Effects in the Palladium‐Catalyzed Heck Reaction

Multichannel Conductance of Folded Single‐Molecule Wires Aided by Through‐Space Conjugation

Methyl Complexes of the Transition Metals

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