Palladium(0) pre-catalysts with heteroditopic NHC-amine ligands by transmetallation from their silver(I) complexes

S. Warsink, P. Hauwert, M.A.M. Siegler, A.L. Spek, C.J. Elsevier

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The synthesis of an air-stable series of Pd0 complexes with dissymmetric bidentate N-heterocyclic carbene-amine ligands has been performed. The key step is an unprecedented carbene transfer from AgI to obtain electron-rich zero-valent palladium precatalysts. The coordination behavior of the ligands was determined with X-ray crystallography. Surprising results were obtained in the catalysis of transfer semi-hydrogenation, where the addition of base appeared not to be necessary to obtain the desired product stereoselectively.
Original languageUndefined/Unknown
Pages (from-to)225-228
Number of pages4
JournalApplied Organometallic Chemistry
Issue number6
Publication statusPublished - 2009

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