Preparation and Properties of Chiral Nitroxide Radicals with Helical Crystal Structure
Preparation and Properties of Chiral Nitroxide Radicals with Helical Crystal Structure
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螺旋晶体结构手性氮氧自由基的制备及性能
DOI：
10.1080/10587259508034041
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发表时间：
1995
影响因子：
0.7
通讯作者：
K. Itoh
中科院分区：
文献类型：
--
作者：
R. Tamura;S. Susuki;N. Azuma;A. Matsumoto;F. Toda;T. Takui;D. Shiomi;K. Itoh
摘要通过高烯丙基硝基酮的三电子还原反应，再与硝基取代的苯甲酰氯反应，合成了一种新型的α不对称双环氮氧化物。由此得到的一些氮氧化物是以两个晶体对映体的等分子混合物--聚集体(外消旋混合物)的形式存在的，因此在重结晶时诱导自发的光学拆分。描述了砾岩的形成与其分子结构和晶体结构的关系，以及顺磁磁化率测量的初步结果。
Abstract A new type of α-asymmetric bicyclic nitroxides were synthesized by three electron reduction of certain homoallylic nitroenones followed by the reaction with nitro-substituted benzoyl chlorides. Some nitroxides thus obtained turned out to exist as a conglomerate (racemic mixture), an equimolecular mixture of two crystalline enantiomers, and hence induced spontaneous optical resolution upon recrystallization. The relationship between the formation of conglomerates and their molecular and crystral structures is described, together with the preliminary results of their paramagnetic susceptibility mesurements.
影响因子：
2.8
作者：
G. Habermehl
通讯作者：
G. Habermehl