Synthesis of 2H-chromenes and 1,2-dihydroquinolines from aryl aldehydes, amines, and alkenylboron compounds [0.03%]
由芳醛、胺和烯基硼化合物合成2H-色满和1,2-二氢喹啉类化合物
Nicos A Petasis,Alexey Butkevich
Nicos A Petasis
The one-step reaction of salicylaldehydes with amines and alkenyl boronic acids or alkenyl trifluoroborates to form 2H-chromenes (2H-1-benzopyrans) has been investigated in more detail and new suitable conditions have been identified, inclu...
New Routes to Low-Coordinate Iron Hydride Complexes: The Binuclear Oxidative Addition of H(2) [0.03%]
铁氢化物复合物的新合成路径:H₂的双核氧化加成反应
Thomas R Dugan,Patrick L Holland
Thomas R Dugan
The oxidative addition and reductive elimination reactions of H(2) on unsaturated transition-metal complexes are crucial in utilizing this important molecule. Both biological and man-made iron catalysts use iron to perform H(2) transformati...
Coupling of Fischer carbene complexes with conjugated enediynes featuring radical traps; Novel structure and reactivity features of chromium complexed arene diradical species [0.03%]
费歇尔卡宾配合物与含自由基陷阱的共轭enediyne偶联；铬络合芳烃双自由基物种的新结构和反应性特征
Yi Zhang,Tareq Irshaidat,Haixia Wang et al.
Yi Zhang et al.
The reaction of Fischer carbene complexes with conjugated enediynes that feature a pendant alkene group has been examined. The reaction proceeds through carbene-alkyne coupling to generate an enyne-ketene intermediate. This intermediate the...
Zirconium-catalyzed methylalumination of heterosubstituted arylethynes. Factors affecting the regio-, stereo-, and chemoselectivities [0.03%]
杂取代芳基乙炔的锆催化甲基铝试剂加成反应。区域、立体和化学选择性的影响因素
Guangwei Wang,Gangguo Zhu,Ei-Ichi Negishi
Guangwei Wang
The Zr-catalyzed methylalumination of heterosubstituted arylethynes containing O, S, Cl, and Si can proceed in high yields (>70%) and in a highly regio- and stereoselective manner (≥98-99%), although SO(2)Ph, Br, and Cl in a benzylic posit...
Synthesis of Functionalized Isoindolinones: Addition of In Situ Generated Organoalanes to Acyliminium Ions [0.03%]
功能化异吲哚酮的合成：有机铝在 situ 生成后与酰基离子加成反应
Joshua G Pierce,David L Waller,Peter Wipf
Joshua G Pierce
Addition of in situ generated di- or trisubstituted alkenylalanes to N-acyliminium ions provides rapid access to functionalized isoindolinones. Subsequent ring closing metathesis leads to tricyclic products. These transformations proceed un...
A Robust Dimethylgold(III) Complex Stabilized by a 2-Pyridyl-2-pyrrolide Ligand [0.03%]
由2-吡啶基-2吡咯酰胺配体稳定的 robust 二甲基金(III) 复合物
Stéphanie Schouteeten,Olivia R Allen,Aireal D Haley et al.
Stéphanie Schouteeten et al.
Reaction of isopropyl[(2-pyridyl)alkyl]amines such as N-isopropyl-N-2-methylpyridine or N-isopropyl-N-2-ethylpyridine with aqueous solutions of NaAuCl(4) led to the formation of [LAuCl(2)][AuCl(4)] in low yields, where L = pyridyl amine bou...
Electronic Structure of the d Bent-metallocene Cp(2)VCl(2): A Photoelectron and Density Functional Study [0.03%]
关于d-型弯曲金属环戊二烯配合物Cp(2)VCl(2)的电子结构:光电子能谱和密度泛函研究
Matthew A Cranswick,Nadine E Gruhn,John H Enemark et al.
Matthew A Cranswick et al.
The Cp(2)VCl(2) molecule is a prototype for bent metallocene complexes with a single electron in the metal d shell, but experimental measure of the binding energy of the d electron by photoelectron spectroscopy eluded early attempts due to ...
A Stable (Amino)(Phosphino)Carbene as bidentate ligand for Palladium and Nickel Complexes: Synthesis, Structure, and Catalytic Activity [0.03%]
稳定的氨基/膦基双齿卡宾配体的钯和镍配合物：合成、结构及催化性能研究
Emmanuelle Teuma,Céline Lyon-Saunier,Heinz Gornitzka et al.
Emmanuelle Teuma et al.
Two original complexes featuring an (amino)(phosphino)carbene η(2)-bonded to the metal have been obtained in 60 and 80 % yields, by addition of the corresponding stable carbene to PdCl(2)(cod) and NiCl(2)(PPh(3))(2), respectively. Both com...
A New Synthetic Method for the Preparation of Protonated-NHCs and Related Compounds [0.03%]
一种制备质子化N-杂环卡宾及其相关化合物的新方法
Rodolphe Jazzar,Hongze Liang,Bruno Donnadieu et al.
Rodolphe Jazzar et al.
Protonated versions of N-heterocyclic carbenes (NHC,H(+)) are classically prepared by closing the ring through the introduction of the CH+ fragment. He we report a totally different synthetic approach, which can be viewed as the addition of...
Cyclic (Alkyl)(amino)carbene Gold(I) complexes: A Synthetic and Structural Investigation [0.03%]
环烷基氨基碳烯金(I)配合物的合成与结构研究
Guido D Frey,Rian D Dewhurst,Shazia Kousar et al.
Guido D Frey et al.
A series of mono- and dicarbene gold(I) complexes of types Au(CAAC)(Cl) [CAAC = cyclic (alkyl)(amino)carbene] (1) and [Au(CAAC)(2)](+)[X](-) (X = Cl, AuCl(2)) (2) have been prepared through reaction of AuCl(SMe(2)) with free carbenes a-e, a...