Synthesis and structural characterization of oxovanadium(IV) complexes of dimedone derivatives
作者:Gamil A.A. Al‐Hazmi、Khlood S. Abou‐Melha、Ismail Althagafi、NashwaM. El‐Metwaly、Fathy Shaaban、Mansour S. Abdul Galil、Ashraf A. El‐Bindary
DOI:10.1002/aoc.5672
日期:2020.8
synthesized new oxovanadium (IV) complexes with dimedone derivatives and their structure were confirmed by elemental analyses, spectroscopic techniques (FT‐IR, UV–visible, EPR) and thermal analysis. The reaction of [VO (acac)2] with the azo dimedone ligands (HLn) produced mononuclear oxovanadium (IV) complexes with formula [VO (Ln)2]H2O. Results of the molar conductance proved that VO2+ complexes are non‐electrolytes
我们已经成功地合成了带有二甲酮衍生物的新型氧钒(IV)配合物,其结构已通过元素分析,光谱技术(FT-IR,UV-可见,EPR)和热分析得到了证实。[VO(ACAC)的反应2 ]与偶氮双甲酮配体(HL Ñ单核氧钒(IV)化合物与式配合物[VO(L生产)Ñ)2 1 H 2的摩尔电导的O.结果证明,VO 2+络合物是非电解质和落入范围14-16Ω- 1厘米2摩尔-1。VO(IV)配合物的配位几何形状为方形锥体,其中钒(IV)离子由羰基(C = O)基团的氧原子和去质子化moiety部分(–NH–)的氮原子配位,而第五位是羰基。而且,已经估计了优化的结构,键角,键长以及所计算的配合物的量子化学参数。使用电子吸收滴定和粘度测量研究复合物的DNA结合活性。获得的结果表明,复合物与CT‐DNA发生凹槽结合,配体部分插入DNA的碱基堆栈之间,结合常数为2.07–5.51 x 10 5 M -1范围。据报道
Visible light mediated organocatalytic dehydrogenative aza-coupling of 1,3-diones using aryldiazonium salts
An efficient protocol for diazenylation of 1,3-diones under photoredox conditions is presented herein. C–N bond forming Csp3–H functionalization of cyclic and alkyl diones by unstable aryl diazenyl radicals is achieved through reaction with aryldiazonium tetrafluoroborates by organocatalysts under visible light irradiation. The reaction has wide substrate scope, gives excellent yields, and is also
本文提出了在光氧化还原条件下 1,3-二酮二氮烯基化的有效方案。在有机催化剂的可见光照射下,不稳定的芳基二氮烯基自由基与芳基重氮四氟硼酸盐反应,实现了环二酮和烷基二酮的 C-N 键形成 C sp 3 -H 官能化。该反应底物范围广,产率优异,并且在水作为绿色溶剂中也很有效。该方法提供了一种容易获得芳基二氮烯基衍生物的方法,芳基二氮烯基衍生物是合成氮杂杂环以及潜在药效团的有用关键起始材料。
Drew, Michael G. B.; Vickery, Brian; Willey, Gerald R., Journal of the Chemical Society. Perkin transactions II, 1982, p. 1297 - 1304
作者:Drew, Michael G. B.、Vickery, Brian、Willey, Gerald R.
DOI:——
日期:——
Nada, Afaf Aly; Erian, Ayman Wahba; Mohamed, Nadia Ragab, Journal of Chemical Research, Miniprint, 1997, # 7, p. 1576 - 1594