- On the isomerization of a trans-dichloro to a cis-dichloro amide- Chelated ruthenium benzylidene complex and the catalytic scope of these species in olefin metathesis
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Upon comparative NMR spectroscopy studies, the isomerization of newly disclosed dichloro [K2(C,O)-2-(N-propylaminocarbonyl)benzylidene][1, 3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidene]ruthenium from trans-dichloro configuration (SPY-5-31) to its thermodynamically more favored cis-dichloro derivative (with SPY-5-34 stereochemistry) was found to proceed via dissociation of one chloride ligand to form an intermediate cationic species. Furthermore, the performance of the trans- and the cis-dichloro derivatives as catalysts in ring-closing metathesis and as initiators in ring-opening metathesis polymerization was studied. Springer-Verlag 2012.
- Leitgeb, Anita,Mereiter, Kurt,Slugovc, Christian
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- Axial chiral biphenyl ring-chain isomeric compound, and preparation method and application thereof
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The invention belongs to the technical field of chiral compound recognition and purity determination, and particularly relates to an axial chiral biphenyl ring-chain isomeric compound, and a preparation method and an application thereof. The axial chiral
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Paragraph 0083-0085; 0089
(2020/02/10)
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- Rhodium(III)-Catalyzed Redox-Neutral Coupling of α-Trifluoromethylacrylic Acid with Benzamides through Directed C?H Bond Cleavage
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A rhodium(III)-catalyzed redox-neutral coupling of α-trifluoromethylacrylic acid with bezamides proceeds smoothly accompanied by amide-directed C?H bond cleavage to produce β-[2-(aminocarbonyl)phenyl]-α-trifluoromethylpropanoic acid derivatives. One of th
- Yoshimoto, Risa,Usuki, Yoshinosuke,Satoh, Tetsuya
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supporting information
p. 802 - 806
(2020/02/25)
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- Practical Synthesis of Phenanthridinones by Palladium-Catalyzed One-Pot C-C and C-N Coupling Reaction: Extending the Substrate Scope to o-Chlorobenzamides
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A highly efficient construction of phenanthridinone derivatives from o-halobenzamides was developed by using a phosphine-free palladium catalyst in N,N-dimethylacetamide. The domino reaction proceeds through a sequential C-C and C-N bond-formation process in one pot. This protocol exhibits broad substrate scope and affords a series of phenanthridinones in up to 93 % yield. Importantly, the protocol could also be applied for the less reactive o-chlorobenzamides. The approach constitutes the first example of the synthesis of phenanthridinones from this kind of substrate. Moreover, the success of a gram-scale reaction demonstrated that this operationally simple process is scalable.
- Liu, Hailong,Han, Weibiao,Li, Chun,Ma, Zhiyong,Li, Ruixiang,Zheng, Xueli,Fu, Haiyan,Chen, Hua
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supporting information
p. 389 - 393
(2016/02/18)
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- Regio- and chemoselective C-H chlorination/bromination of electron-deficient arenes by weak coordination and study of relative directing-group abilities
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It's all relative: A practical and efficient PdII-catalyzed regio- and chemoselective chlorination/bromination has been developed for the facile synthesis of a broad range of aromatic chlorides. The reaction demonstrates excellent reactivity, good functional-group tolerance, and high yields. A preliminary study was conducted to evaluate relative directing-group abilities of various functionalities. Copyright
- Sun, Xiuyun,Shan, Gang,Sun, Yonghui,Rao, Yu
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supporting information
p. 4440 - 4444
(2013/05/22)
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- Synthesis of 1-aminoisoquinolines by gold(III)-mediated domino reactions from 2-alkynylbenzamides and ammonium acetate
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A facile synthetic route toward pharmaceutically interesting 1-aminoisoquinoline derivatives by gold(III)-mediated domino reactions is described. This synthetic protocol starts from readily available 2-alkynylbenzamides and ammonium acetate and takes plac
- Long, Yuhua,She, Zhigang,Liu, Xiaochen,Chen, Yu
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p. 2579 - 2588
(2013/04/24)
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