The structural and stereogenic properties of pentaerythritoxy-bridged cyclotriphosphazene derivatives: spiro–spiro, spiro–ansa and ansa–ansa isomers
作者:Simon J. Coles、David B. Davies、Robert J. Eaton、Michael B. Hursthouse、Adem Kılıç、Robert A. Shaw、Aylin Uslu
DOI:10.1039/b512854d
日期:——
derivatives linked spiro–spiro, spiro–ansa and ansa–ansa. The structures and stereogenic properties of the products were characterised by X-ray crystallography and 31P NMR spectroscopy on addition of the chiral solvating agent, (S)-(+)-2,2,2-trifluoro-1-(9-anthryl)ethanol. Molecules with spiro–spiro and spiro–ansa bridged gem-disubstituted cyclophosphazenes [R = Ph, NHBut or (OCH2CF2CF2CH2O)0.5] are found to
的反应 季戊四醇 和 六氯环三磷腈,N 3 P 3 Cl 6和宝石二取代的环三磷腈衍生物N 3 P 3 Cl 4 R 2 [R = Ph,NHBu t或(OCH 2 CF 2 CF 2 CH 2 O)0.5 ]得到一系列季戊四醇-桥接衍生工具链接了spiro – spiro,spiro – ansa和ansa – ansa。产品的结构和立体感特性通过X射线晶体学 和 31 P NMR光谱 加入手性溶剂后, (S)-(+)-2,2,2-三氟-1-(9-蒽基)乙醇。发现具有螺–螺和螺– ansa桥联的宝石-二取代的环磷腈[R = Ph,NHBu t或(OCH 2 CF 2 CF 2 CH 2 O)0.5 ]的分子是手性的,并且以队友。具有ansa – ansa桥联环磷腈[R = Cl或(OCH 2 CF 2 CF 2 CH 2 O)0.5 ]的分子首次得到表征,并显示具有内消旋构型。晶体分析结