Two Approaches for the Synthesis of Fused Dihydropyridines via a 1,6-Electrocyclic Reaction: Fluorescent Properties and Prospects for Application
作者:Aleksey A. Gagarin、Polina O. Suntsova、Artem S. Minin、Varvara A. Pozdina、Pavel A. Slepukhin、Enrico Benassi、Nataliya P. Belskaya
DOI:10.1021/acs.joc.0c01934
日期:2020.11.6
acid, methyl and ethyl esters, and methyl propiolate were systematically studied, and a number of new 2,3-dihydro-5H-thiazolo[3,2-a]pyridines (DTPs) and 4H,6H-pyrido[2,1-b][1,3]thiazines (PTZs) were prepared. A possible mechanism for a multistep domino transformation is suggested, and the key step is the 1,6-electrocyclic reaction. An additional alternative method for the synthesis of new heterocyclic
系统地研究了5-2,4-二烯硫酰胺与乙炔二羧酸,甲基和乙酯,丙酸甲酯的反应,以及许多新的2,3-二氢-5 H-噻唑并[3,2- a ]吡啶(DTPs) )和4 H,6 H -pyrido [2,1- b制备了[1,3]噻嗪(PTZ)。提出了多步多米诺骨牌转化的可能机制,关键步骤是1,6-电环反应。实现了合成新杂环系统的另一种替代方法。通过X射线衍射和量子化学计算对合成的双环非芳族吡啶的空间结构进行分析,并从热力学量中收集了关键步骤的电循环机理的证据。DTP在溶液中显示黄色荧光,在固态时显示黄色至红色发射。生物学研究表明DTP能够穿透活细胞和固定细胞,并可能在溶酶体中积累。