Palladium-catalyzed regioselective arylation of an electron-rich olefin by aryl halides in ionic liquids

Organic Letters

Volumn 3, Issue 2, 2001, Pages 295-297

  Xu, Lijin ^a   Chen, Weiping ^a   Ross, James ^a   Xiao, Jianliang ^a  

^a UNIVERSITY OF LIVERPOOL   (United Kingdom)

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ARTICLE;

EID: 0001685466     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol000362b     Document Type: Article

References (34)

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15. Regiocontrol is possible for the coupling of aryl halides and triflates with heterosubstituted olefins that bear additional functionalities capable of chelating to palladium: (a) Andersson, C.-M.; Larsson, J.; Hallberg, A. J. Org. Chem. 1990, 55, 5757.
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25. This is what one would expect on the basis of Hughes - Ingold rules: Reichardt, C. Solvents and Solvent Effects in Organic Chemistry, 2nd ed; VCH: Weinheim, 1988.
26. The products from this study are known compounds. For their physical and spectroscopic data, see: (a) Ichinose, N.; Mizuno, K.; Otsuji, Y.; Caldwell, R.; Helms, A. M. J. Org. Chem. 1998, 63, 3176.
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33. (h) Reference 2b.
34. The dielectric constants, which can be used as a quantitative measure of solvent polarity, of the four molecular solvents range from 2.4 to 46.5.