Reactivity of nickel metal precursors towards amido linked N-heterocyclic carbenes and their catalytic studies for cross coupling reactions
Abstract
The refluxing of chloroacetamide derivatives with n-butyl imidazole resulted in their corresponding salt of composition 1-(n-butyl)-3-N-(2-Ar)acetamido-1, 3-imidazolium chloride (Ar = furylmethyl (1a); phenylmethyl (1b)). The latter salt on treatment with DBU followed by the addition of chalcogen atom resulted into a compound [(1-(n-butyl)-3-N-(2-Ar)acetamido-1,3-imidazol-3-ylidine)E] (Ar = furylmethyl; E = S (2a); Ar = phenylmthyl; E = Se (2b)). Similarly, the reaction of the imidazolium salts with, excess K2CO3 and NiCl2·6H2O yielded compounds [(1-(n-butyl)-3-N-(2-Ar)acetamido-1,3-imidazol-3-ylidine)]2Ni (Ar = furylmethyl (3a); phenylmethyl (3b)). The latter complexes have also been isolated by using Ni(II) phosphine precursors [NiCl2(PP)] (PP = PPh3, dppf). The molecular structure of [(1-(n-butyl)-3-N-(2-furylmethyl)acetamido-1, 3-imidazol-3-ylidine)]2Ni and [(1-(n-butyl)-3-N-(2-phenylmethyl)acetamido-1, 3-imidazol-3-ylidine)]2Ni were established by single crystal X-ray diffraction analysis. The catalytic property of complex 3a and 3b for cross coupling reactions has been studied.
Citation
Nagar , S , Chatterjee , S , Goswami , D , Cordes , D B , Slawin , A M Z , Chauhan , R S & Prabhu , P 2020 , ' Reactivity of nickel metal precursors towards amido linked N -heterocyclic carbenes and their catalytic studies for cross coupling reactions ' , Inorganica Chimica Acta , vol. 504 , 119446 . https://doi.org/10.1016/j.ica.2020.119446
Publication
Inorganica Chimica Acta
Status
Peer reviewed
ISSN
0020-1693Type
Journal article
Description
One of the authors (RSC) is grateful to DST for the financial support under the DST young scientist scheme YSS/2014/000797.Collections
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