Synthesis and Characterization of Oxadisilole-Fused 1<i>H</i>-Benzo[<i>f</i>]indazoles and 1<i>H</i>-Naphtho[2,3-<i>f</i>]indazoles
作者:Yajuan Zhang、Xuyan Ma、Yali Chen、Xuanming Chen、Lei Guo、Weiguo Cao、Jie Chen、Man Shing Wong
DOI:10.1002/ejoc.201300110
日期:2013.5
1H-benzo[f]- and 1H-naphtho[2,3-f]indazoles have been synthesized by the 1,3-dipolar cycloaddition reactions of benzo- or naphtho-oxabicycloalkenes with nitrile imines generated in situ from N-arylhydrazonoyl chlorides followed by deoxygenation and aromatization. The photophysical, redox and thermal properties of these compounds have been characterized. Some of the indazoles show potential as deep-blue emitters
Oxadisilole 稠合的 1H-苯并 [f]- 和 1H-萘并 [2,3-f] 吲唑已通过苯并或萘并氧杂双环烯烃与腈亚胺的 1,3-偶极环加成反应合成芳基腙酰氯,然后脱氧和芳构化。这些化合物的光物理、氧化还原和热性能已被表征。由于其高荧光量子产率和良好的热稳定性,一些吲唑显示出作为 OLED 应用的深蓝色发射体的潜力。