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Synthesis 2003(18): 2894-2897
DOI: 10.1055/s-2003-44352
DOI: 10.1055/s-2003-44352
SPECIALTOPIC
© Georg Thieme Verlag Stuttgart · New York
A Superior Non-Symmetrical NCP Pincer Type Palladacycle Catalyst Precursor for the Coupling of Aryl Boronic Acids with Aryl Chlorides
Further Information
Received
28 October 2003
Publication Date:
25 November 2003 (online)
Publication History
Publication Date:
25 November 2003 (online)
Abstract
The air and water stable non-symmetrical pincer palladacycle [Me2NCH2(Cl)C=C(CH2)2OP(i-Pr)2-kNkCkP]PdCl 5, easily prepared from the chloropalladation of the hetero-substituted alkyne Me2NCH2C≡C(CH2)2OP(i-Pr)2, is a highly efficient catalyst precursor for the coupling of aryl boronic acids and aryl chlorides. Both electron-rich and electron-poor aryl chlorides are efficiently coupled in the presence of 5 to furnish the corresponding cross-coupled products in excellent yields, and a wide variety of functional groups are tolerated in both aryl chloride and aryl boronic acid.
Key words
palladacycles - cross-coupling - boronic acids - aryl chlorides - Suzuki coupling
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