Highly efficient synthesis and<scp>NMR</scp>features of novel fused pyrimidothiazinium trihalogenides
作者:Mikhajlo Onysko、Oleg Svalyavin、Marina Slivka、Mikhailo Slivka、Vjacheslav Baumer、Vasil Lendel
DOI:10.1002/jhet.4387
日期:2022.2
pyrimidines are a popular class of heterocyclic compounds because they have a wide range of biological activity. This article aims to evaluate the simple, catalyst-free procedure of synthesis of novel fused pyrimidothiazines. An efficient access to a series of pyrazolo[4′,3′:5,6]pyrimido[2,1-b][1,3]thiazinium, pyrazolo[3′,4′:5,6]pyrimido[2,1-b][1,3]-thiazinium, and benzo[b]thieno[4′,3′:5,6]pyrimido[2,1-b][1
缩合嘧啶是一类流行的杂环化合物,因为它们具有广泛的生物活性。本文旨在评估新型稠合嘧啶并噻嗪的简单、无催化剂合成方法。高效获取一系列吡唑并[4',3':5,6]嘧啶并[2,1- b ][1,3]噻嗪、吡唑[3',4':5,6]嘧啶[2, 1- b ][1,3]-噻嗪鎓和苯并[b]噻吩并[4′,3′:5,6]嘧啶并[2,1-b][1,3]噻嗪鎓三卤化物是通过在卤素的作用下相应的嘧啶肉桂基硫醚。XDR 和复核磁共振研究用于求解最终产品的结构;在合成化合物的核磁共振光谱中观察到了邻位对的不等时性-和间质子,以及与它们相关的N-苯基取代基。