EPR and ENDOR spectroscopic study of the reactions of aromatic azides with gallium trichloride
作者:Giorgio Bencivenni、Riccardo Cesari、Daniele Nanni、Hassane El Mkami、John C. Walton
DOI:10.1039/c0ob00084a
日期:——
The reactions of gallium trichloride with phenyl and deuterio-phenyl azides, as well as with 4-methoxyphenyl azide and deuterium isotopomers, were examined by product analysis, CW EPR spectroscopy and pulsed ENDOR spectroscopy. The products included the corresponding anilines together with 4-aminodiphenylamine type dimers, and polyanilines. Complex CW EPR spectra of the radical cations of the dimers
的反应 三氯化镓 与苯基和氘代叠氮化物,以及 4-甲氧基苯基叠氮化物通过产物分析,连续波EPR光谱和脉冲ENDOR光谱检查了氘和氘的同位素异构体。产品包括相应的苯胺以及4-氨基二苯胺型二聚体和聚苯胺。二聚体[ArNHC 6 H 4 NH 2 ] + ˙和三聚体[ArNHC 6 H 4 NHC 6 H 4 NH 2 ] +的自由基阳离子的复杂CW EPR光谱获得。借助氘取代类似物的数据以及脉冲Davies ENDOR光谱对这些EPR光谱进行了分析。自由基阳离子的DFT计算提供了确凿的证据,并表明未成对的电子被容纳在广泛的π-离域轨道中。提出了一种机制来解释芳族叠氮化物还原转化为相应的苯胺并因此还原为二聚体和三聚体的机理。
DEUTERIUM-ENRICHED IRINOTECAN
申请人:Czarnik Anthony W.
公开号:US20090062323A1
公开(公告)日:2009-03-05
The present application describes deuterium-enriched irinotecan, pharmaceutically acceptable salt forms thereof, and methods of treating using the same.