CuAAC and RuAAC with Alkyne-functionalised Dihydroazulene Photoswitches and Determination of Hammett σ-Constants for Triazoles
作者:Henriette Lissau、Søren Lindbæk Broman、Martyn Jevric、Anders Ø. Madsen、Mogens Brøndsted Nielsen
DOI:10.1071/ch13544
日期:——
Dihydroazulene (DHA)–vinylheptafulvene (VHF) photoswitches have attracted attention as potentially useful components in molecular electronics. The π-conjugated dihydroazulene system is a rigid structure and can be strategically functionalised to place handles for further elaboration. Here we show that alkyne-functionalised dihydroazulenes can be subjected to copper and ruthenium catalysed azide–alkyne
作为分子电子学中潜在有用的成分,二氢氮杂烯(DHA)-乙烯基七富烯(VHF)光电开关已引起人们的关注。π-共轭二氢氮杂烯系统是一种刚性结构,可以从战略上进行功能化,以放置手柄以进行进一步的加工。在这里,我们表明炔烃官能化的二氢azulenes可以与铜和钌一起被甲苯和叠氮化物催化的叠氮化物-炔烃环加成反应(CuAAC和RuAAC),提供1,4-和1,5-二取代的三唑。闭环相应vinylheptafulvenes的速率与那些参考系统,该系统允许哈米特取代基常数(的判定进行比较元和对位)为Ñ甲苯基-取代的1,2,3-三唑。