New P–S–N containing ring systems. Reaction of 2,4-(naphthalene-1,8-diyl)-1,3,2,4-dithiadiphosphetane 2,4-disulfide with methylbis(trimethylsilyl)amine
作者:Petr Kilián、Jaromír Marek、Radek Marek、Jaromír Tousek、Otakar Humpa、Alexandra M. Z. Slawin、Jirí Touzín、Josef Novosad、J. Derek Woollins
DOI:10.1039/a901698h
日期:——
From the reaction of 2,4-(naphthalene-1,8-diyl)-1,3,2,4-dithiadiphosphetane 2,4-disulfide 1 with methylbis(trimethylsilyl)amine 2 in dichloromethane a product of the P2S2 ring cleavage, (C10H6)P(S)(SSiMe3)(µ-S)P(S)(NMeSiMe3) 3, was isolated, existing in an equilibrium between two diastereomeric forms in solution. Compound 3 was also obtained when toluene was used as a solvent. Its subsequent reaction with pyridine (py) led to the desilylated ionic product [Hpy+][(C10H6)P(S)(NHMe)(µ-S)PS2â] 4, which reacts with tetraphenylphosphonium chloride to give [PPh4+][(C10H6)P(S)(NHMe)(µ-S)PS2â] 5. When acetonitrile was used as a solvent a cage compound 2,6-(naphthalene-1,8-diyl)-3,4-dimethyl-1,3,5,2λ5,6λ5-thiadiazadiphosphinine 2,6-disulfide 6 containing a six-membered CN2P2S heterocycle was obtained. The new compounds were studied spectroscopically (1- and 2-D high resolution NMR, IR, MS) and in the cases of 3, 5 and 6 by X-ray crystallography.
从 2,4-(萘-1,8-二基)-1,3,2,4-二硫二磷杂环丁烷 2,4-二硫化物 1 与甲基双(三甲基硅)胺 2 在二氯甲烷中的反应中,分离出了 P2S2 环裂解产物 (C10H6)P(S)(SSiMe3)(µ-S)P(S)(NMeSiMe3) 3、(C10H6)P(S)(SSiMe3)(µ-S)P(S)(NMeSiMe3) 3 分离出来,在溶液中两种非对映形式处于平衡状态。使用甲苯作为溶剂时,也可以得到化合物 3。该化合物随后与吡啶(py)反应,得到脱硅离子产物[Hpy+][(C10H6)P(S)(NHMe)(µ-S)PS2â]4,再与四苯基氯化鏻反应,得到[PPh4+][(C10H6)P(S)(NHMe)(µ-S)PS2â]5。当使用乙腈作为溶剂时,得到了含有六元 CN2P2S 杂环的笼状化合物 2,6-(萘-1,8-二基)-3,4-二甲基-1,3,5,2δ "5,6δ "5-噻二唑二膦 2,6-二硫化物 6。对这些新化合物进行了光谱学研究(1-和 2-D 高分辨率核磁共振、红外光谱、质谱),并对 3、5 和 6 进行了 X 射线晶体学研究。