Azolium-Linked Cyclophanes: A Comprehensive Examination of Conformations by <sup>1</sup>H NMR Spectroscopy and Structural Studies
作者:Murray V. Baker、Mark J. Bosnich、David H. Brown、Lindsay T. Byrne、Valerie J. Hesler、Brian W. Skelton、Allan H. White、Charlotte C. Williams
DOI:10.1021/jo049097o
日期:2004.10.1
o/m-cyclophanes are rigid on the NMR time scale, as indicated by sharp 1H NMR spectra at all accessible temperatures. The non-mesitylene-based m-cyclophanes and the o-cyclophanes are fluxional on the NMR time scale at hightemperatures, but in most cases, specific conformations can be “frozen out” at low temperatures. Many structures deduced from solution studies were consistent with those in the solid state
报道了一系列偶氮连接的环烷的合成和表征。环烷由与两个苯环单元(苯,萘,对二甲苯,均三甲苯,1,2,3,4-和1,2,4, 5-四甲基苯,2,6-吡啶,和p -叔通过亚甲基基团丁基苯酚)。检查了在苯环类单元中含有邻位,间位和对位取代模式的环环烷。通过变温NMR研究在溶液中检查了环烷的构象,并且通过晶体学研究在固态下检查了环烷的构象。该P-环番,均三基如在所有可及温度下的1 H NMR清晰光谱所示,m-和o / m-环烷在NMR时标上是刚性的。非均三甲苯基米-cyclophanes和Ò -cyclophanes上在高温下的NMR时间尺度fluxional,但在大多数情况下,特定的构象可以是“冻结了”在低温下。由溶液研究得出的许多结构与固态结构一致。
Intervalence (Charge-Resonance) Transitions in Organic Mixed-Valence Systems. Through-Space versus Through-Bond Electron Transfer between Bridged Aromatic (Redox) Centers
作者:D.-L. Sun、S. V. Rosokha、S. V. Lindeman、J. K. Kochi
DOI:10.1021/ja037867s
日期:2003.12.1
intramolecular electrontransfer is enforced in the mixed-valence cation radical 2a(*)(+) by the p-phenylene bridge which provides the structurally inflexible and linear connection between Ar(*)(+)/Ar redox centers. The direct comparison of intramolecular rates of electrontransfer (k(ET)) between identical T(*)(+)/T centers in 3(*)(+) and 2a(*)(+)( )()indicates that through-space and through-bond mechanisms
Donor−Acceptor (Electronic) Coupling in the Precursor Complex to Organic Electron Transfer: Intermolecular and Intramolecular Self-Exchange between Phenothiazine Redox Centers
作者:Duoli Sun、Sergiy V. Rosokha、Jay K. Kochi
DOI:10.1021/ja038746v
日期:2004.2.1
intermolecular (PH)(2)*+ and the intramolecular P(br)P*+ systems. The values of H(IV), together with the reorganization energies lambda derived from the intervalence transitions, yield activation barriers DeltaG(ET)() and first-order rate constants k(ET) for electron-transfer based on the Marcus-Hush (two-state) formalism. Such theoretically based values of the intrinsic barrier and ET rate constants agree with
AROMATIC AND HETEROAROMATIC COMPOUNDS USEFUL IN TREATING IRON DISORDERS
申请人:Cadieux Jean-Jacques
公开号:US20100240713A1
公开(公告)日:2010-09-23
This invention is directed to compounds of formula (I), wherein m, formula (II), R
1
, R
2
and R
3
are as defined herein, as a stereoisomer, enantiomer, tautomer thereof or mixtures thereof; or a pharmaceutically acceptable salt, solvate or prodrug thereof, for the treatment of iron disorders. This invention is also directed to pharmaceutical compositions comprising the compounds and methods of using the compounds to treat iron disorders.