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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Syntheses and structural characterization of o-carboranylamides with direct cage-amide bond?
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Syntheses and structural characterization of o-carboranylamides with direct cage-amide bond?

机译：具有直接笼酰胺键的邻氨基甲酰胺的合成及结构表征

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Reactions of lithio-o-carborane with isocyanates under various conditions were studied, and the structural features of the resulting carboranylamides are described. The reactions of o-carborane (o-C_2B_(10)H_(12)), n-BuLi (two equiv.) and two equiv. of (substituted) phenylisocyanate, pentylisocyanate and p-ethylphenylthioisocyanate in diethyl ether, respectively, led, after workup, to the corresponding mono-substituted carboranylamide 2a-g and carboranylthioamide 5 in low to moderate yields, and only with RNCO (R = Ph, m-MeOC_6H_4, pentyl) could disubstituted products 3a-c be isolated. The reaction with phenylisocyanate afforded the mono-amide and di-amide products in a ratio of approximately 1: 2, whereas in the other two reactions the ratios are approximately 4: 1 and 3: 2, respectively. In tetrahydrofuran all the reactions attempted with RNCO (R = Ph, p-IC_6H_4, m-NCC_6H_4 and pentyl) gave more monoamide products than those in diethyl ether. With phenylisocyanate no diamide product was isolated and with pentylisocyanate the ratio between monoamide and diamide is approximately 3.5: 1. The new carboranylamides were characterized by means of elemental analyses, IR and NMR spectroscopy and mass spectrometry, as well as single-crystal X-ray diffraction analyses of 2a-f, 3a and 5.
机译：研究了在不同条件下锂硫代-碳环烷与异氰酸酯的反应，并描述了所得碳硼烷酰胺的结构特征。邻-碳硼烷（o-C_2B_（10）H_（12）），n-BuLi（两个当量）和两个当量的反应处理后，分别将（取代的）苯基异氰酸酯，戊基异氰酸酯和对乙基苯基硫代异氰酸酯以低到中等的收率（仅使用RNCO（R = Ph，间-MeOC_6H_4，戊基）可以分离出双取代的产物3a-c。与苯基异氰酸酯的反应得到的单酰胺和二酰胺产物的比例大约为1：2，而在其他两个反应中，比例分别为大约4：1和3：2。在四氢呋喃中，尝试与RNCO进行的所有反应（R = Ph，p-IC_6H_4，m-NCC_6H_4和戊基）比在乙醚中得到的单酰胺产物更多。使用苯基异氰酸酯时，未分离出二酰胺产物，而使用戊基异氰酸酯时，单酰胺和二酰胺之间的比率约为3.5：1。通过元素分析，IR和NMR光谱，质谱以及单晶X射线对新的碳硼酰胺进行表征。 2a-f，3a和5的衍射分析

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