The synthesis and ir and NMR (1HH, 3CC AND 9Sn)Sn) spectral studies of some methyltin(IV) sulphonates
摘要:
Some methyltin(IV) sulphonates, Me(n)Sn(OSO(2)X)(4-n) (n = 1-3 and X = 4-tolyl and 2-naphthyl) have been prepared. The H-1, C-13 and Sn-119 NMR spectra of these compounds and the previously reported compounds, Me(3)Sn(OSO(2)X) (X = CF3, CH3 and 4-CH3C6H4) and Me(2)Sn(OSO2CH3)(2), in coordinating and non-coordinating solvents have been studied. From the chemical shifts delta(Sn-119) and the coupling constants (1)J(C-13, Sn-119) and (2)J(H-1, Sn-119), coordination number of the tin atom and the geometry of its coordination sphere have been suggested. These observations have been complemented by IR spectroscopy. Synthesis of the ternary compounds, MeSnCl(OSO(2)X)(2) (X = CH3 and 4-CH3C6H4), by reaction between Me(3)Sn(OSO(2)X) and Me(2)SnCl(2) and subsequent cleavage of the tin-carbon bond is also discussed.
由于其强大的亲电特性,三氧化硫可以插入碳与硅,锗,锡和铅元素之间的键中。该反应在非常温和的条件下进行,通常得到磺酸的有机金属衍生物,R 3 M =OSO 2 R(M = Si,Ge,Sn和Pb; R =烷基或芳基)。在合适的条件下,可以检测到有机金属硫酸盐和磺酸酐(R 3 MO)2 SO 2和RSO 2 OSO 2 R作为副反应的产物。描述了所得产物的性质并讨论了反应机理。
Synthesis and spectral characterization of medium ring distannacycloalkanes and their Lewis acid derivatives
作者:Dan Farah、Kamal Swami、Henry G. Kuivila
DOI:10.1016/0022-328x(92)83182-h
日期:1992.5
A study of the syntheses and some properties of several methyl substituted acyclic and cyclic bidentate organotin Lewis acids has been carried out. Of particular interest were cyclic species with 7-, 8-, 9- and 10-membered rings. The distannaalkanes and distannacycloalkanes were converted to the chlorides by chlorodemethylation with tin chlorides or mercuric chloride; this reaction was accompanied
已经进行了几种甲基取代的无环和环状二齿有机锡路易斯酸的合成和一些性质的研究。特别令人感兴趣的是具有7、8、9和10元环的环状物质。通过用氯化锡或氯化汞进行氯脱甲基化,将二烷烷和二烷环烷烃转化为氯化物。在某些情况下,该反应伴有环断裂。反过来,氯化物很容易转化为甲磺酸盐和三氟甲磺酸盐。1 H,13 C和119 Sn NMR和IR光谱数据用于获得有关结构,构象和聚集行为的信息。甲磺酸酯在氯仿中缔合。三叉戟不是。