首页> 外文期刊>Chemistry: A European journal >Diphospha[2]ferrocenophane (alias 1,4-Dihydrotetraphosphaneoxide): Stereoselective Formation via Hydrolytic PP Bond Formation
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Diphospha[2]ferrocenophane (alias 1,4-Dihydrotetraphosphaneoxide): Stereoselective Formation via Hydrolytic PP Bond Formation

机译:Diphospha [2]二茂铁oph烷(别名为1,4-二氢四膦氧化物):通过水解PP键形成的立体选择性形成

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摘要

Phosphorus-rich compounds recently attracted great interest as primary products in the direct functionalization of elemental phosphorus.[1C9] Linear oligo-/polyphosphanes (PnHn+2), which are particularly rich in phosphorus, are on the other hand unstable against disproportionation, unlike their carbon analogues, the alkanes (CnH2n+2).[10, 11] In the past, linear tetraphosphanes have been stabilized to some extent by partial substitutionideally with sterically demanding substituents.[12C15] Also the embedding of H-terminated tetraphosphane units into bicyclic systems improves their thermal stability which allowed the first crystal structure determinations for such compounds.[16, 17] The rigid geometry in such bicyclic systems ensures that the phosphorus lone pairs of neighboring atoms adopt the more stable gauche conformation.[18, 19] Herein, we report synthesis, structure and stereochemical aspects of a stable ferrocenylene bridged H-terminated tetraphosphane oxide (1), which is only the second diphospha[2]ferrocenophane as well as the first monooxidized tetraphosphane reported so far.
机译:最近,富含磷的化合物作为主要产品对元素磷的直接官能化引起了极大的兴趣。[1C9]尤其富含磷的线性低聚/聚膦(PnHn + 2)另一方面,对歧化不稳定,与[10,11]过去,线性四膦烷通过在空间上需要的取代基进行部分理想地取代,从而在某种程度上稳定了。[12C15]还嵌入了H端基四膦单元双环体系提高了其热稳定性,从而可以确定此类化合物的第一个晶体结构。[16,17]这种双环体系的刚性几何结构确保相邻原子的磷孤对采用更稳定的gauche构象。[18,19]在本文中,我们报道了稳定的二茂铁桥联的氢封端的四膦氧化物(1)的合成,结构和立体化学方面,迄今为止,他报道了第二个二磷[2]二茂铁碳烷以及第一个单氧化的四膦。

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