Reactions of mono- and bis-N-bromosulfimides with thio-ether crowns, phosphines and selenides
作者:Stephen M. Aucott、Mark R. Bailey、Mark R. J. Elsegood、Liam M. Gilby、Kathryn E. Holmes、Paul F. Kelly、Michael J. Papageorgiou、Sarah Pedrón-Haba
DOI:10.1039/b316850f
日期:——
The brominated sulfimide Ph2SNBr reacts with diphosphines 1,2-(PPh2)2C2H4 and 1,4-(Ph2P)2(C6H4) to give the bis-N-phosphoniosulfimidium cations [1,2-(Ph2PNSPh2)2C2H4]2+ and [1,4-(Ph2PNSPh2)2(C6H4)]2+, respectively. Treatment of the bis-sulfimide 1,4-[PhSNH]2C6H4 with N-bromosuccinimide results in 1,4-[PhSNBr]2C6H4, which in turn reacts with triphenylphosphine to generate [1,4-(PhSNSPPh3})2C6H4]Br2. Both Ph2SNBr and 1,4-[PhSNBr]2C6H4 react with the thio-ether crown [9-ane]S3, giving [9[ane]S3NSPh2]Br and [1,4-[9-ane]S2S(NSPh)2C6H4]Br2, respectively. The first examples of seleniosulfimidium salts have been isolated from the reactions of Ph2SNBr and 1,4(PhSNBr})2C6H4 with Ph2Se and the structures of the [Ph2SNSePh2]+ and [1,4-(PhSNSePh2)2C6H4]2+ cations confirmed by X-ray crystallography. Reaction of 1,2-PhS(NH)C6H4SPh with one equivalent of N-bromosuccinimide followed by addition of Na[BPh4] results in [1,2-(PhS)2(μ-N)C6H4][BPh4] in which a CCSNS ring is observed; two forms of this material may be isolated upon crystallisation—X-ray crystallography reveals them to differ by the relative orientations of the phenyl rings.
溴化亚硫酰亚胺 Ph2SNBr 与二膦 1,2-(PPh2)2C2H4 和 1,4-(Ph2P)2(C6H4) 反应,分别生成双 N-膦亚硫酰亚胺阳离子 [1,2-(Ph2PNSPh2)2C2H4]2+ 和 [1,4-(Ph2PNSPh2)2(C6H4)]2+。用 N-溴琥珀酰亚胺处理双亚硫酰 1,4-[PhSNH]2C6H4 会生成 1,4-[PhSNBr]2C6H4,然后与三苯基膦反应生成 [1,4-(PhSNSPPh3})2C6H4]Br2。Ph2SNBr 和 1,4-[PhSNBr]2C6H4 都会与硫醚冠 [9-ane]S3 反应,分别生成 [9[ane]S3NSPh2]Br 和 [1,4-[9-ane]S2S(NSPh)2C6H4]Br2。从 Ph2SNBr 和 1,4(PhSNBr})2C6H4 与 Ph2Se 的反应中分离出了首例硒亚硫鎓盐,并通过 X 射线晶体学证实了 [Ph2SNSePh2]+ 和 [1,4-(PhSNSePh2)2C6H4]2+ 阳离子的结构。1,2-PhS(NH)C6H4SPh 与一个当量的 N-溴代琥珀酰亚胺反应,然后加入 Na[BPh4] 会产生[1,2-(PhS)2(μ-N)C6H4][BPh4],其中观察到一个 CCSNS 环;结晶后可分离出两种形式的这种物质--X 射线晶体学显示它们因苯基环的相对取向而不同。