- Micelle enabled C(sp2)-C(sp3) cross-electrophile coupling in waterviasynergistic nickel and copper catalysis
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A robust and sustainable C(sp2)-C(sp3) cross-electrophile coupling was developedvianickel/copper synergistic catalysis under micellar conditions. This protocol provided a general method to access alkylated arenes with good to excellent yields on a very large scale.
- Ye, Ning,Wu, Bin,Zhao, Kangming,Ge, Xiaobin,Zheng, Yu,Shen, Xiaodong,Shi, Lei,Cortes-Clerget, Margery,Regnier, Morgan Louis,Parmentier, Michael,Gallou, Fabrice
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Read Online
- Negishi alkyl-aryl cross-coupling catalyzed by Rh: Efficiency of novel tripodal 3-diphenylphosphino-2-(diphenylphosphino)methyl-2-methylpropyl acetate ligand
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3-Diphenylphosphino-2-(diphenylphoshino)methyl-2-methylpropyl acetate acted as an efficient ligand for a Rh catalyst, achieving cross-coupling between arylzinc compounds bearing electron-withdrawing groups and alkyl electrophiles. The beneficial effect of the tripodal ligand and such aryl nucleophiles was discussed with regard to the specificity of the Rh catalysis.
- Ejiri, Syogo,Odo, Shunsuke,Takahashi, Hideki,Nishimura, Yugo,Gotoh, Kazuma,Nishihara, Yasushi,Takagi, Kentaro
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supporting information; experimental part
p. 1692 - 1695
(2010/09/03)
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- Novel Rh catalysis in cross-coupling between alkyl halides and arylzinc compounds possessing ortho-COX (X = OR, NMe2, or Ph) groups
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Rh-dppf was found to be an efficient catalyst for the cross-coupling between primary alkyl halides bearings-hydrogens and arylzinc compounds possessing carbonyl groups such as ester, amide, or ketone at the ortho position. Various functional groups such as ester, nitrite, or acyloxylate moieties on the halides were tolerated under the catalysis conditions. Arylzinc compounds free of ortho-carbonyl groups reacted well with ethyl 3-iodopropanoate, suggesting that the essential intramolecular interaction between carbonyl groups and Rh promotes the reductive elimination.
- Takahashi, Hideki,Inagaki, Shinya,Nishihara, Yasushi,Shibata, Takanori,Takagi, Kentaro
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p. 3037 - 3040
(2007/10/03)
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