Expedient syntheses of neutral and cationic Au(I)–NHC complexes
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The synthesis and isolation of gold(I) precatalysts often requires the generation of several isolable intermediates as well as numerous purification steps. New protocols for the expedient synthesis of neutral [Au(OH)(NHC)] and [Au(CH2COCH3)(NHC)] species from [AuCl(NHC)] or [AuCl(DMS)] precursors bearing a variety of N-heterocyclic carbene (NHC) ligands are presented. These methods can be employed in a telescoping manner for the synthesis of catalytically relevant [Au(NTf2)(NHC)] and [Au(NHC)(NCCH3)][BF4] complexes. These attractive methods are straightforward and practical leading to various complexes in high isolated yields and purity.
Veenboer , R M P , Gasperini , D , Nahra , F , Cordes , D B , Slawin , A M Z , Cazin , C S J & Nolan , S P 2017 , ' Expedient syntheses of neutral and cationic Au(I)–NHC complexes ' , Organometallics , vol. 36 , no. 18 , pp. 3645–3653 . https://doi.org/10.1021/acs.organomet.7b00622
Copyright © 2017 American Chemical Society. This work has been made available online in accordance with the publisher’s policies. This is the author created accepted version manuscript following peer review and as such may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1021/acs.organomet.7b00622
DescriptionThe European Research Council (ERC) and the Engineering and Physical Sciences Research Council (EPSRC), UK are gratefully acknowledged for their support. Umicore AG is thanked for generous donations of auric acid. S.P.N. thanks the King Abdullah University of Science and Technology (KAUST) for support.
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