Synthesis and Spectroscopic Studies of 1,1′-(1,8-Naphthylene)di-1<i>H</i>-1,2,3-triazoles
作者:Yoshinobu Nagawa、Koichi Honda、Hiroshi Nakanishi
DOI:10.1246/bcsj.60.2931
日期:1987.8
The first 1,8-diheteroaromatic naphthalenes, 1,1′-(1,8-naphthylene)di-1H-1,2,3-triazoles (1), were synthesized by 1,3-dipolar cycloadditions of 1,8-diazidonaphthalene to acetylenic esters. The spectral properties of these compounds were studied and compared with those of the corresponding 1-(1-naphthyl)-1H-1,2,3-triazoles (2). The two triazole rings at the peri-positions in 1 are in a face-to-face arrangement according to the results of 1H NMR spectra. The UV spectra of 1 are almost identical with each other and show a red shift from those of corresponding 2. No significant spectral differences between 1 and 2 were observed in the IR spectra. The fragment ion with two azirine groups at the peri-position in the naphthalene ring was observed in the MS spectra of 1.
通过 1,8- 二氮杂萘与乙炔酯的 1,3- 二极环加成反应,合成了第一个 1,8- 二异芳族萘--1,1′-(1,8-萘基)二-1H-1,2,3-三唑 (1)。研究了这些化合物的光谱特性,并与相应的 1-(1-萘基)-1H-1,2,3-三唑(2)的光谱特性进行了比较。根据 1H NMR 光谱的结果,1 中的两个三唑环在围位上呈面对面排列。1 的紫外光谱与相应 2 的紫外光谱几乎完全相同,并显示出红移。在红外光谱中没有观察到 1 和 2 之间有明显的光谱差异。在 1 的质谱图中可以观察到萘环周位置上有两个氮丙啶基团的碎片离子。