Late-Stage Modification of NHC Gold(I) Complexes: Fast Track to Ligand Design as a Key for New Reactivities in Gold-Catalysis

03 June 2025, Version 1
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

Herein we report the synthesis of bulky N-heterocyclic carbene gold(I) complexes via an “on-metal” eightfold Suzuki coupling of a suitable precursor complex. An initial screening revealed the optimal reaction conditions furnishing a series of extremely bulky gold(I) complexes in extraordinary yields. One of these complexes shows one of the highest buried volumes published so far. This synthetic potential of this complex to open up completely new reactivity patterns was demonstrated by inverting the reactivity of gold catalysts towards 1,5-diynes, enabling a diastereoselective synthesis of benzofulvenes.

Keywords

N-Heterocyclic Carbenes
Gold
Gold-Catalysis
Benzofulvenes
Catalysis

Supplementary materials

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Title
Late-Stage Modification of NHC Gold(I) Complexes: Fast Track to Ligand Design as a Key for New Reactivities in Gold-Catalysis
Description
This is the supporting information of the manuscript, including full characterization of all new compounds, and single crystal structure data
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