Preparation, Structure, and Unique Redox Properties of Mono-, Bis-, and Tris(diarylmethylene)-1,3,5-trithianes and Related Compounds
作者:Takanori Suzuki、Tsuyoshi Yoshino、Jun-ichi Nishida、Masakazu Ohkita、Takashi Tsuji
DOI:10.1021/jo000161l
日期:2000.9.1
that a large structural change and/or transannular bonding are induced during their electrochemical oxidation. Mono(diarylmethylene) derivative 1a exhibits electrochromism with vivid change in color from faintly yellow to deep blue with concomitant rotation around the exocyclic bond. Both of the strongly colored salts obtained upon oxidation of 2,4-bis- and 2,4,6-tris(diarylmethylene)-1,3,5-trithianes
设计了一系列具有二芳基亚甲基单元的1,3,5-三噻烷1-3,作为新型电子给体,在氧化时可得到高度着色的阳离子。它们与二噻吩和二噻嗪衍生物4-6一起通过锂化杂环与二芳基酮的反应然后脱水来制备。伏安分析表明,在其电化学氧化过程中会引起大的结构变化和/或跨环键。单(二芳基亚甲基)衍生物1a表现出电致变色,其颜色从淡黄色变为深蓝色,伴随着围绕环外键的旋转。2,4-双-和2,4,6-三(二芳基亚甲基)-1,3,5-三噻烷(2aa和3)氧化后得到的两种强烈着色的盐均含有1,2, 4-三硫环 提示具有三噻吩并[3.1.0]己烷环的跨环药物容易发生骨骼重排。还原这些盐后,分别得到亮黄色12和13,由于四芳基丁二烯型共轭,具有高供电子性,从而得到另一类电致变色化合物。