作者:Graham Pattison、Graham Sandford、Ian Wilson、Dmitrii S. Yufit、Judith A.K. Howard、John A. Christopher、David D. Miller
DOI:10.1016/j.tet.2016.12.006
日期:2017.2
substitution of fluorine para to ring nitrogen. Subsequent reaction of the trifluoropyridazine derivatives 2 gave a range of 4,5-di- and tri-substituted products 3 and 6. Related reactions of tetrafluoropyridazine 1 with difunctional nucleophiles gave [6,6]-, [5,6]- and [6,5,6]-polycyclic ring fused pyridazine scaffolds 4 and 9. Further functionalisation of scaffolds 4 by nucleophlic aromatic substitution
Tetrafluoropyridazine 1进行反应与一系列含氧,氮,硫和碳中心亲核试剂得到,通常,产品2选自氟取代而产生对位到环氮。三氟哒嗪衍生物2的随后反应给出了4,5-二-和三取代的产物3和6。四氟哒嗪1与双官能亲核试剂的相关反应给出了[6,6]-,[5,6]-和[6,5,6]-多环稠合哒嗪骨架4和9。支架的进一步功能化4涉及环原子氮邻位活化位点上的氟原子置换的核苷芳族取代过程提供了使用四氟哒嗪作为起始原料制备多取代哒嗪和新型多官能环稠合哒嗪系统提供合成可能性的指示,在药物中具有潜在应用发现竞技场。