Bis[oxo/thioxothiazolinyl] Aromatic Compounds - Synthesis and Conformational Assignment
作者:Anca Hîrtopeanu、Cristina Suteu、Cornelia Uncuta、Gheorghe Mihai、Christian Roussel
DOI:10.1002/(sici)1099-0690(200003)2000:6<1081::aid-ejoc1081>3.0.co;2-1
日期:2000.3
A series of bis(oxo/thioxothiazolinyl) aromatic atropisomers with two chiral C(aryl)-N(heterocycle) axes was synthesized. The separation of antiparallel, parallel diastereomers was achieved by chromatography on silica. Conformational assignment for the bis-thione atropisomers 1a,b-4a,b and bis-one atropisomers 9a,b-12a,b was based on polarimetric results in analytical chiral chromatography on microcrystalline
合成了一系列具有两个手性 C(芳基)-N(杂环) 轴的双(氧代/硫代噻唑啉基) 芳族阻转异构体。反平行、平行非对映异构体的分离是通过硅胶色谱法实现的。双硫酮阻转异构体 1a、b-4a、b 和双一阻转异构体 9a、b-12a、b 的构象分配是基于微晶纤维素三乙酸酯分析手性色谱中的极化结果。为二硫酮和二酮发现的构象-1H NMR 化学位移关系已成功应用于未通过手性液相色谱指定的硫酮一阻转异构体的构象分配。