volume 37, issue 11, P1695-1707 2018
DOI: 10.1021/acs.organomet.8b00149
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Abstract: Dinuclear rhodium-NHC complexes of formula [Rh(µ-Cl)(NHC)(η 2-coe)]2 react with 2-vinylpyridine to yield the chelate compounds RhCl(NHC)(κ-N,η 2-CH2=CHC5H4N) {NHC = IPr, 1,3-bis-(2,6-diisopropylphenyl)imidazolin-2-carbene; IMes, 1,3-bis-(2,4,6-trimethylphenyl)imidazolin-2-carbene}. The strained metallacycle can be opened by substitution of the pyridine ring by the small electron-rich PEt3 to give RhCl(IPr){ 2-CH2=CH(C5H4N)}(PEt3), whereas π-ligands such as olefins or alkynes undergo CC coupling to yield 2-(bu…

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