- Synthesis of N-Heterocyclic Carbine Silver(I) and Palladium(II) Complexes with Acylated Piperazine Linker and Catalytic Activity in Three Types of C—C Coupling Reactions
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Two bis-imidazolium salts LH2·Cl2 and LH2·(PF6)2 with acylated piperazine linker and two N-heterocyclic carbene (NHC) silver(I) and palladium(II) complexes [L2Ag2](PF6)2 (1) and [L2Pd2Cl4] (2) were prepared. The crystal structures of LH2·Cl2 and 1 were confirmed by X-ray analysis. In 1, one 26-membered macrometallocycle was generated through two silver(I) ions and two bidentate ligands L. The catalytic activity of 2 was investigated in Sonogashira, Heck-Mizoroki and Suzuki-Miyaura reactions. The results displayed that these C—C coupling reactions can be smoothly carried out under the catalysis of 2.
- Liu, Qingxiang,Zhang, Xiantao,Zhao, Zhixiang,Li, Xinying,Zhang, Wei
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supporting information
p. 605 - 613
(2021/02/01)
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- A convenient approach to λ5-phosphinines via interaction of phosphorylated 3-pyrrolidinocrotonitrile with 2-bromoacetophenones
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The alkylation of 2-(diphenylphosphino)-3-pyrrolidin-1-ylbut-2-enenitrile with a set of bromoacetophenones has been studied. Cyclization of the phosphonium salts into 6-cyano-3-hydroxy-3-aryl-1,1-diphenyl-5-pyrrolidin-1-yl-1,2,3,4-tetrahydrophosphininium
- Svyaschenko, Yurii V.,Kostyuk, Alexandr N.,Barnych, Bogdan B.,Volochnyuk, Dmitriy M.
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p. 5656 - 5664
(2008/01/01)
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- Process for the Pd-catalyzed arylation of olefins with aryl halides
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Compounds of the formula I STR1 in which A is C2-12 -alkenyl, C4-8 -cycloalkenyl or a grouping--C(R)=C(R')--Y and Y, R, R', R1, R2, R3 and R3 ' are as defined in patent claim 1, can be prepared in high yields in a simple and economical manner by reacting corresponding bromobenzenes or iodobenzenes with a compound HA in the presence of an alkali metal salt or alkaline earth metal salt of an aliphatic monocarboxylic acid having 1-12 C atoms or benzoic acid, of a cyclic or N,N-disubstituted amide as the solvent, particularly N,N-dimethylformamide, and of a palladium compound which can, if desired, contain arsenic or phosphorus, as the catalyst.
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- REACTION OF METHYL ACRYLATE AND METHACRYLATE WITH BISDIAZOTIZED DIAMINES OF THE BIPHENYL SERIES
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Bisdiazotized diamines of the biphenylene series react with methyl acrylate and methyl methacrylate in the presence of cupric and ferrous chloride in two directions; the product from chloroarylation involving both diazo groups or involving one diazo group
- Ganushchak, N. I.,Fedorovich, I. S.,Obushak, N. D.,Gnatyuk, L. S.,Prokopishin, I. Yu.
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p. 1508 - 1512
(2007/10/02)
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