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Published TCIMAIL newest issue No.198
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New Palladacycle Precatalyst
No.156(January 2013)
Di-μ-chlorobis(2'-amino-1,1'-biphenyl-2-yl-C,N)dipalladium(II) (1) is a palladacycle dimer formed from two aminobiphenyl-pallacycle units structurally bridged by two chlorine atoms.1) 1 is a palladacycle precatalyst and by the use of 1 with various phosphine ligands can be used as a catalyst for Suzuki-Miyaura cross-coupling.2) As an example, when a catalyst prepared from 1 and 1,1'-bis(diisopropylphosphino)ferrocene (dippf) is employed, couplings of benzyloxymethyltrifluoroborate with aromatic mesyl esters successfully proceed to afford the desired coupling products.2a)
References
- The cyclopalladation reaction of 2-phenylaniline revisited
- Suzuki–Miyaura cross-coupling using 1 as a palladacycle precatalyst
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