Aromatic Ring Strain in Arylselenenyl Bromides: Role in Facile Synthesis of Selenenate Esters via Intramolecular Cyclization
作者:K. Selvakumar、Harkesh B. Singh、Ray J. Butcher
DOI:10.1002/chem.201000394
日期:2010.9.10
The synthesis and reactivity of 2,6‐disubstituted arylselenium compounds derived from 2‐bromo‐5‐tert‐butylisophthalic acid (43) are described. The syntheses of bis(5‐tert‐butylisophthalic acid dimethyl ester)diselenide (46) and bis(5‐tert‐butylisophthalic acid diisopropyl ester)diselenide (47) have been achieved by the reaction of the corresponding ester precursors with disodium diselenide. Reduction
Strained dimethyl 2-(bromoselanyl)-5-tert-butylisophthalate: a reactive precursor for the synthesis of ebselen analogs
作者:Karuthapandi Selvakumar、Harkesh B. Singh、Ray J. Butcher
DOI:10.1016/j.tetlet.2011.10.067
日期:2011.12
ebselen analogs, having Se⋯O(ester) secondary bonding interaction, is described. The reaction of dimethyl 2-(bromoselanyl)-5-tert-butylisophthalate (4) with different diprotic amines such as ethanolamine, 2-chloroethylamine, and N,N′-dimethylethylenediamine afforded the ebselen analogs. Reaction of 4 with ethylenediamine and tris(2-aminoethyl)amine resulted in the formation of bis- and tris-ebselen derivatives