Pd-PEPPSI N-Heterocyclic Carbene Complexes from Caffeine: Application in Suzuki, Heck, and Sonogashira Reactions [0.03%]
来自咖啡因的Pd-PEPPSI-N杂环卡宾复合物及其在Suzuki、Heck和Sonogashira反应中的应用
Md Mahbubur Rahman,Jin Zhang,Qun Zhao et al.
Md Mahbubur Rahman et al.
The first synthesis of Pd-PEPPSI N-heterocyclic carbene complexes derived from the abundant and renewable natural product caffeine is reported. The catalysts bearing 3-chloro-pyridine, pyridine and N-methylimidazole ancillary ligands were r...
[Ni(Np#)(η5-Cp)Cl]: Flexible, Sterically Bulky, Well-Defined, Highly Reactive Complex for Nickel-Catalyzed Cross-Coupling [0.03%]
[Ni(Np*)(η⁵-Cp)Cl]：一种结构灵活、体积庞大、定义明确且高度反应性的用于镍催化交叉偶联的配合物
Md Mahbubur Rahman,Qun Zhao,Guangrong Meng et al.
Md Mahbubur Rahman et al.
Ni-NHCs (NHC = N-heterocyclic carbene) have become an increasingly important class of complexes in catalysis and organometallic chemistry owing to the beneficial features of nickel as an abundant 3d metal. However, the development of well-d...
Substituent Effects and Mechanistic Insights on the Catalytic Activities of (Tetraarylcyclopentadienone)iron Carbonyl Compounds in Transfer Hydrogenations and Dehydrogenations [0.03%]
取代基效应和(Tetraarylcyclopentadienone)羰基铁化合物在转移氢化和脱氢反应中的催化活性的机理研究
Bryn K Werley,Xintong Hou,Evan P Bertonazzi et al.
Bryn K Werley et al.
(Cyclopentadienone)iron carbonyl compounds are catalytically active in carbonyl/imine reductions, alcohol oxidations, and borrowing hydrogen reactions, but the effect of cyclopentadienone electronics on their activity is not well establishe...
Challenges in the Synthesis of Active Site Mimics for [NiFe]-Hydrogenases [0.03%]
模拟[NiFe]氢化酶活性位点合成中的挑战
Debashis Basu,Danielle L Gray,Toby J Woods et al.
Debashis Basu et al.
One of the more active areas in bioorganometallic chemistry is the preparation and reactivity studies of active site mimics of the [NiFe]-hydrogenases. One area of particular recent progress involves reactions that interconvert Ni(μ-X)Fe c...
Fanjun Zhang,Toby J Woods,Thomas B Rauchfuss
Fanjun Zhang
Complexes of the type (diphosphine)Ni(μ-SR)2Fe(CO)3 are investigated with azadithiolate (adt, HN(CH2S-)2) as the dithiolate. The resulting complexes are hybrid models for the active sites of the [NiFe]- and [FeFe]-hydrogenases. The key com...
Jaekwan Kim,Dominic T Egger,Connor W Frye et al.
Jaekwan Kim et al.
Ti-catalyzed oxidative alkyne carboamination with alkenes and azo compounds can yield either α,β-unsaturated imines or cyclopropyl imines through a common azatitanacyclohexene intermediate. Herein, we report the synthesis of a model azati...
Pyrrole-Based Ti(III) and Ti(IV) PNP Pincer Complexes: Insertion of Ketones into the Ti(IV)-Phosphorus Bond [0.03%]
含吡咯
Gerald Tomsu,Berthold Stöger,Karl Kirchner
Gerald Tomsu
The synthesis, characterization, and reactivity of pyrrole-based Ti(III) and Ti(IV) PNP pincer complexes are described. [P(NH)P-iPr] (1) reacts with [TiCl4(THF)2] at room temperature in the presence of NEt3 to afford the Ti(IV) complex [Ti(...
Experimental and Theoretical Investigation of Ion Pairing in Gold(III) Catalysts [0.03%]
金(III)催化剂中离子对形成的实验和理论研究
Jacopo Segato,Eleonora Aneggi,Walter Baratta et al.
Jacopo Segato et al.
The ion pairing structure of the possible species present in solution during the gold(III)-catalyzed hydration of alkynes: [(ppy)Au(NHC)Y]X2 and [(ppy)Au(NHC)X]X [ppy = 2-phenylpyridine, NHC = NHCiPr = 1,3-bis(2,6-di-isopropylphenyl)-imidaz...
Iron(II)-Catalyzed Activation of Si-N and Si-O Bonds Using Hydroboranes [0.03%]
氢硼化物催化的硅氮键和硅氧键的铁(ii)活化反应
Mirela A Farcaş-Johnson,Danila Gasperini,Andrew K King et al.
Mirela A Farcaş-Johnson et al.
We report the activation and functionalization of Si-N bonds with pinacol borane catalyzed by a three-coordinate iron(II) β-diketiminate complex. The reactions proceed via the mild activation of silazanes to yield useful hydrosilanes and a...
E-H Bond Cleavage Processes in Reactions of Heterometallic Phosphinidene-Bridged MoRe and MoMn Complexes with Hydrogen and p-Block Element Hydrides [0.03%]
含H-E键的异金属磷化物桥联钼铼和钼锰配合物与氢气及p区元素氢化物反应中的裂解过程研究
M Angeles Alvarez,M Esther García,Daniel García-Vivó et al.
M Angeles Alvarez et al.
Reactions of complexes [MoMCp(μ-PMes*)(CO)6] with H2 and several p-block element (E) hydrides mostly resulted in the cleavage of E-H bonds under mild conditions [M = Re (1a) and Mn (1b); Mes* = 2,4,6-C6H2tBu3]. The reaction with H2 (ca. 4 ...