Reactions of 2,2′-diselenobis(N-alkylbenzamides) with peroxides: A free-radical synthesis of Ebselen and related analogues
作者:Mei C. Fong、Carl H. Schiesser
DOI:10.1016/0040-4039(95)01511-f
日期:1995.10
(3, R = Hex, Ph, iso-Pro, tert-Bu), prepared from the corresponding 2-benzylselenobenzamides, react with benzoyl peroxide in benzene, under reflux, to afford the 2,2′-diselenobis(N-alkylbenzamides) (4) in 54–87% yield. Further treatment with benzoyl peroxide or di-tert-butyl peroxide in benzene or chlorobenzene affords the N-alkyl-1,2-benzisoselenazol-3(2H)-ones (2) in 76–85% yield. This transformation
N-烷基-2- triphenylstannylbenzamides(3,R =六角形,PH,异-Pro,叔-Bu),从相应的2- benzylselenobenzamides制备,过氧化苯甲酰在苯反应,在回流下,得到2,2' -diselenobis(N-烷基苯甲酰胺)(4),产率54-87%。在苯或氯苯中用过氧化苯甲酰或过氧化二叔丁酯进行进一步处理,可得到N-烷基-1,2-苯并硒代吲哚-3(2H)-二(2),收率76-85%。该转化大概涉及中间体intermediate基,其在硒上进行分子内均溶取代以提供产物。