Synthesis of 1<i>H</i>-Pyrazol-5-yl-pyridin-2-yl-[1,2,4]triazinyl Soft-Lewis Basic Complexants via Metal and Oxidant Free [3 + 2] Dipolar Cycloaddition of Terminal Ethynyl Pyridines with Tosylhydrazides
作者:Giri Babu Veerakanellore、Caris M. Smith、Monica Vasiliu、Allen G. Oliver、David A. Dixon、Jesse D. Carrick
DOI:10.1021/acs.joc.9b02088
日期:2019.11.15
Soft-Lewis basic complexants that facilitate chemoselective separation of the minor actinides from the lanthanides are critical to the closure of the nuclear fuel cycle. Complexants that modulate covalent orbital interactions with relevant metals of interest can facilitate desired outcomes in liquid-liquid separation, allowing for further transmutative processes that decrease issues related with storage
有助于从镧系元素中进行化学选择性分离次要act系元素的软刘易斯碱性络合剂对于结束核燃料循环至关重要。调节与感兴趣的相关金属的共价轨道相互作用的络合剂可以促进液-液分离中的预期结果,从而允许进行进一步的processes变过程,从而减少与来自能源和武器生产的乏核燃料存储有关的问题。先前未开发的支架的合成旨在改善性能,使其优于基准络合物。在当前的工作中,分子间的,热引发的和DBU辅助的3-(6-乙炔基-吡啶-2-基)-5,6-二苯基-[1,2,3,2]的环加成反应[3 + 2] 具有结构上不同的4-甲基苯磺酰肼的4]三嗪双极性亲和剂以42-68%的收率和对所需的区域异构体的适度的区域选择性提供了21个尚待报道的实例。本文报道了必要的起始原料的制备,方法定义,偶极和偶极亲和性范围,十倍放大反应以及下游官能团的相互转化。