New mesoionic systems of azolopyridine series 2. Synthesis, structures, and biological activity of 2-aminothiazolo[3,2-a]pyridinium salts and thiazolo[3,2-a]pyridinium 2-imidates
作者:E. V. Babaev、A. A. Bush、I. A. Orlova、V. B. Rybakov、I. Iwataki
DOI:10.1007/s11172-005-0242-3
日期:2005.1
A new procedure was developed for the synthesis of 2-aminothiazolo[3,2-a]pyridinium salts 8 by the reaction of 2-halo-N-phenacylpyridinium salts with KSCN. The anion compositions of salts 8 were studied by ion chromatography. Acylation of salts 8 afforded representatives of the previously unknown bicyclic mesoionic thiazolo[3,2-a]pyridinium 2-imidate system 9. The three-dimensional structures of 2
通过 2-卤代-N-苯甲酰基吡啶鎓盐与 KSCN 反应,开发了一种用于合成 2-氨基噻唑并 [3,2-a] 吡啶鎓盐 8 的新方法。通过离子色谱研究了盐8的阴离子组成。盐的酰化 8 提供了先前未知的双环介离子噻唑并 [3,2-a] 吡啶鎓 2-亚胺酸酯体系的代表 9. 2-氨基-3-(对溴苯甲酰基)噻唑并[3,2-] 的三维结构a]吡啶鎓硫氰酸盐和N-三氟乙酰基-3-(对硝基苯甲酰基)噻唑并[3,2-a]吡啶鎓2-亚胺酸酯通过X射线衍射分析确定。