Synthesis, spectroscopy and computational studies of some novel π-conjugated vinyl N-alkylated quinolinium salts and their precursor's
作者:Jacek E. Nycz、Karolina Czyż、Marcin Szala、Jan G. Malecki、George Shaw、Brendan Gilmore、Marek Jon
DOI:10.1016/j.molstruc.2015.11.011
日期:2016.2
of π-conjugated vinyl N -methylated quinolinium salts ( 3 ) and their precursor's N -alkylated quinolinium salts ( 2 ) were prepared and characterized by NMR, IR, UV–Vis and MS spectroscopy. It was confirmed that the hydroxyl and amino derivatives of vinyl N -methylated quinolinium salts lead to spiro type compounds ( 4 ). The syntheses of N -alkylated quinolinium salts were successful, and even multigram
摘要 制备了一系列π-共轭乙烯基N-甲基化喹啉鎓盐( 3 ) 及其前体的N - 烷基化喹啉鎓盐( 2 ),并通过NMR、IR、UV-Vis 和MS 光谱对其进行了表征。证实乙烯基N-甲基化喹啉盐的羟基和氨基衍生物产生螺型化合物(4)。N-烷基化喹啉盐的合成是成功的,甚至可以达到数克规模。1,2-二甲基喹啉碘化物(2a)和1-乙基-2-甲基碘化喹啉(2b)的结构通过单晶X射线衍射法测定。NMR 谱表明,2 和 3 的甲基和 N-烷基很容易诊断出 H-1 和 C-13 信号。使用具有 B3LYP 泛函的密度泛函理论 (DFT) 方法在单线态下优化所研究化合物的几何形状。一般来说,预测的键长和键角与基于 X 射线晶体结构数据的值非常吻合。