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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/11871

Title: Unprecedented long-range 1,7-bromination in gold complexes of N-(aryl) imino functionalized N-heterocyclic carbenes
Authors: SAMANTARAY, MK
PANG, KL
SHAIKH, MM
GHOSH, P
Keywords: high-temperature bromination
ring-opening polymerization
electrophilic bromination
ligand
palladium(ii)
olefins
derivatives
tribromide
initiators
convenient
Issue Date: 2008
Publisher: ROYAL SOC CHEMISTRY
Citation: DALTON TRANSACTIONS, (36), 4893-4902
Abstract: An unique long-range 1,7-bromination reaction is observed in gold(III) complexes of N-(aryl) imino functionalized N-heterocyclic carbene with the bromination occurring at two different carbon (sp(2) and sp(3)) centers spatially separated by ca. 6.4 angstrom but existing in extended conjugation to each other. In particular, the unusual distant 1,7-brominated gold(III) complexes [1-R-3-{N-(pbromo2,6-di-i-propylphenylimino)-2-phenyl-1-bromoethyl}imidazol-2-ylidene]AuBr(3) [R = Me (1d), i-Pr (2d), t-Bu (3d),-CH(2)Ph (4d)] were synthesized cleanly at room temperature under ambient conditions from the reactions of molecular bromine with the gold(I) complexes [1-R-3{ N-(2,6-di-i-propylphenylimino)-2-phenylethyl} imidazol-2-ylidene]AuCl [R = Me (1c), i-Pr (2c), t-Bu (3c),-CH(2)Ph (4c)]. All of the 1,7-bromination products (1d, 2d, 3d and 4d) have been structurally verified by X-ray diffraction studies.
URI: http://dx.doi.org/10.1039/b807830k
http://dspace.library.iitb.ac.in/xmlui/handle/10054/11871
http://hdl.handle.net/10054/11871
ISSN: 1477-9226
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