Water‐Involved Ring‐Opening of 4‐Phenyl‐1,2,4‐triazoline‐3,5‐dione for “Photo‐Clicked” Access to Carbamoyl Formazan Photoswitches In Situ
作者:Yuanqin Zheng、Yuqiao Zhou、Yan Zhang、Pengchi Deng、Xiaohu Zhao、Shichao Jiang、Guangxi Du、Xin Shen、Xinyu Xie、Zhishan Su、Zhipeng Yu
DOI:10.1002/asia.202101239
日期:2022.1.17
The perishable nature of 4-phenyl-1,2,4-triazoline-3,5-dione (PTAD) in aqueous medium is always considered as a side-effect. The rapid color fading of PTAD inspired us to explore the mechanism of its hydrolysis. Herein, photogenerated nitrile imine is discovered to be an ultra-fast trapping agent to “click” with a ring-opening hydrolysate with an umpolung effect, which resulted in an unprecedented
4-苯基-1,2,4-三唑啉-3,5-二酮(PTAD) 在水性介质中易腐烂的性质始终被认为是一种副作用。PTAD 的快速褪色启发了我们探索其水解机制。在此,发现光生腈亚胺是一种超快速捕获剂,可与具有 umpolung 效应的开环水解产物“点击”,从而产生前所未有的氨基甲酰基甲臜作为光可切换键。