7,7-Dimethyl-7-siladispiro[2.0.2.1]heptane derivatives. The first silacyclopropanes
作者:Dietmar Seyferth、Robert L. Lambert、Dennis C. Annarelli
DOI:10.1016/s0022-328x(00)82392-x
日期:1976.12
The preparation of the firstsilacyclopropanes, all derivatives of 7,7-dimethyl-7-siladispiro[2.0.2.1]heptane, by magnesium-induced ring closure reactions of 1,3-dihalides, is described. Mass spectral and 1H, 13C and 29Si NMR spectral data, as well as the unusually high chemical reactivity of these compounds support the assigned silacyclopropane structures.
描述了通过镁诱导的1,3-二卤化物的闭环反应制备第一甲硅烷基丙烷,即7,7-二甲基-7-硅二螺[2.0.2.1]庚烷的所有衍生物。这些化合物的质谱,1 H,13 C和29 Si NMR光谱数据以及异常高的化学反应性均支持指定的硅杂环丙烷结构。
The extraordinary reactivity of the ring SiC bonds in 1,1-dimethyl-trans-2,3-bis(2′,2′-dimethylcyclopropylidene)-1-silacyclopropane
作者:Dietmar Seyferth、Carol K. Haas、Robert L. Lambert、Dennis C. Annarelli
DOI:10.1016/s0022-328x(00)91917-x
日期:1978.5
The reactions of the title silirane with oxygen, water, alcohols, primary and some secondary amines, hydrogen sulfide, carboxylic acids and hydrazoic acid proceeded exothermally at room temperature with opening of the SiC bond of the SiC2 ring. Hydrogen chloride reacted rapidly at −78°C, as did methyl- and phenyl-lithium and lithium dialkylamides. Ring cleavage of the silirane also could be effected