Selectivity for Exhaustive Cross-Coupling of Dihaloarenes is Affected by the Interplay Between Halide Byproduct, Solvent, and Ligand [0.03%]
生成二卤代芳烃 exhaustive 交叉偶联的选择性受卤化物副产物、溶剂和配体相互作用的影响
Nathaniel G Larson,Matthew P Sandin,Sharon R Neufeldt
Nathaniel G Larson
In dihaloarene cross-couplings, the step(s) that take place after reductive elimination and before the start of the next cycle influence selectivity for mono- versus difunctionalization. When palladium is supported by a bulky ligand "L", a ...
Comparative Study of Aqueous Acid-Base Properties of Tungstocene and Molybdocene Complexes [0.03%]
聚钨和聚钼芳基金属簇合物水溶液酸碱性质的比较研究
Niklas Stix,Miljan Z Ćorović,Sophia S Schiller et al.
Niklas Stix et al.
The aqueous chemistry of molybdenum and tungsten complexes is relevant due to their occurrence in metalloenzymes. However, water-stable and -soluble model complexes in biologically relevant higher oxidation states are rare. Metallocenes of ...
Rhodium-Catalyzed Arene Alkenylation Using Benzoquinone Derivatives as Oxidants [0.03%]
以苯醌衍生物为氧化剂的铑催化芳基烯化反应
Marc T Bennett,Marina Goupalova,Christopher M Chapman et al.
Marc T Bennett et al.
The Rh-catalyzed conversion of olefins and arenes to alkenyl arenes using [(η2-C2H4)2Rh-(μ-OPiv)]2 as the catalyst precursor and 12 ortho- and para-substituted benzoquinone derivatives as the in situ oxidant is reported. Included are comp...
Synthesis and Characterization of a Copper Complex Supported by a Z‑type SbV Ligand: XPS and DFT Study of Electronic Structure [0.03%]
以Z型SbV配体为支撑的铜配合物的合成与表征:XPS和DFT研究电子结构
Christopher K Webber,Macarena G Alférez,Farzad Bastani et al.
Christopher K Webber et al.
We describe the synthesis and characterization of a Cu-(I) complex, {Q3Sb-(o-chlor)}-Cu-(OTf) (Q = 8-quinolinyl; OTf = trifluoromethanesulfonate; o-chlor = o-choranil), supported by the Sb-(V) ligand Q3Sb-(o-chlor). The complex {Q3Sb-(o-chl...
Field Effects Govern the Decarboxylation of Copper(II)-Benzoates: Kinetic and Mechanistic Studies [0.03%]
场效应控制铜(II)苯甲酸盐的脱羧：动力学和机理研究
Shannen C Lorraine,Andreas Baur,Natalie Taylor et al.
Shannen C Lorraine et al.
An experimental mechanistic study of the decarboxylation reactivity of well-defined 1,10-phenanthroline-ligated copper(I)- and copper(II)-benzoate complexes is reported. This work demonstrates decarboxylation to occur from both copper(I)- a...
Reece Lister-Roberts,Meera Mehta
Reece Lister-Roberts
The reaction of Zintl phases K3As7 and K3P7 were investigated with 1-azido-4-bromobenzene (4-BrC6H4N3) and found to yield potassium salts of substituted diazadipnictogen rings (general molecular fragment {(RN)2Pn2}; Pn = P, As). In the case...
Flash Communication: Properties and Applications of a Pentavalent Bromoantimony Lewis Acid [0.03%]
五价溴化锑路易斯酸的性质及应用
Alexander C Mehnert,Chenggang Jiang,Brendan L Murphy et al.
Alexander C Mehnert et al.
While normally reluctant toward oxidation, SbBr3 can be oxidized with 3,4,5,6-tetrachloro-1,2-benzoquinone (o-chloranil) in the presence of a Lewis base like the bromide anion or triphenylphosphine oxide (PPh3O) to form the tetrachlorocatec...
Flash Communication: (Ph3P)2N2Aza-Wittig Reagent for Metal Carbonyls [0.03%]
飞利浦试剂(Ph3P)2N2——金属羰基化合物的氮化物甲基化试剂
Chandan Nandi,Fabian Dankert,Olha Bereziuk et al.
Chandan Nandi et al.
Cr-(CO)6, Mo-(CO)6, W-(CO)6, and Fe-(CO)5 undergo an aza-Wittig reaction with triphenylphosphinazine [(Ph3P)2N2]. These reactions address exclusively one CO ligand, yielding (isocyanoimino)-triphenylphosphorane metal complexes [(CO) x MCN2(...
Reductive Head-to-Head Coupling of Phenylacetylenes in the Coordination Sphere of an Osmium-Polyhydride [0.03%]
配位球内的锇-多氢配合物催化的苯乙炔的加成耦合反应
Sheila G Curto,Miguel A Esteruelas,Katarzyna A Mituła-Chmielowiec et al.
Sheila G Curto et al.
Complex OsH6(PiPr3)2 releases H2 at 50 °C. The resulting tetrahydride OsH4(PiPr3)2 promotes head-to-head reductive dimerization of phenylacetylenes to give the 1,4-dibranched-butenediyl derivatives OsH2{η4-[C4H4R2]}-(PiPr3)2 (R = C6H5, C6...
Photophysical and Biological Properties of Diprotic Ruthenium(II) Complexes with Extended π-Systems [0.03%]
具有扩展π系统的二齿钌(II)配合物的光物理及生物性能研究
Olaitan E Oladipupo,David M Muthama,Wilmer J Andújar-Cruz et al.
Olaitan E Oladipupo et al.
Ruthenium(II) polypyridyl complexes can be harnessed for photodynamic therapy. In this work, diprotic ligands which can be deprotonated to change the metal complexes from dicationic to neutral are combined with extended π systems for light...