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Synergic Deprotonation Generates Alkali‐Metal Salts of Tethered Fluorenide‐NHC Ligands Co‐Complexed to Alkali‐Metal Amides
Author(s) -
Evans Kieren J.,
Mansell Stephen M.
Publication year - 2019
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201806278
Subject(s) - deprotonation , alkali metal , amide , chemistry , carbene , chelation , ligand (biochemistry) , reagent , metal , polymer chemistry , medicinal chemistry , ion , inorganic chemistry , organic chemistry , catalysis , biochemistry , receptor
Synergic combinations of alkali‐metal hydrocarbyl/amide reagents were used to synthesise saturated N‐heterocyclic carbene (NHC) ligands tethered to a fluorenide anion through deprotonation of a spirocyclic precursor, whereas conventional bases were not successful. The Li 2 derivatives displayed a bridging amide between two Li atoms within the fluorenide‐NHC pocket, whereas the Na 2 and K 2 analogues displayed extended solid‐state structures with the fluorenide‐NHC ligand chelating one alkali metal centre.