Reductive methylation of triphthaloylbenzene: Isolation and characterization of hexamethoxy-trinaphthylene and two unexpected trinaphthylene derivatives
作者:Keigo Nishida、Katsuhiko Ono、Shin-ichiro Kato、Chitoshi Kitamura
DOI:10.1016/j.tetlet.2020.152422
日期:2020.10
π-conjugated materials for application in electronics, the reductive methylation of triphthaloylbenzene is presented. Several new products are obtained: 5,6,11,12,17,18-hexamethoxy-trinaphthylene (1a) and two unexpected compounds, i.e., the corresponding monohydroxy-pentamethoxy-trinaphthylene (1b) and a peculiar trinaphtylene derivative (2) possessing hydroxy, methoxy, carbonyl, and ketal groups and a
为了开发用于电子学的新型π共轭材料,提出了三邻苯二甲酰苯的还原甲基化。获得了几种新产品:5,6,11,12,17,18-六甲氧基-三萘嵌苯(1a)和两个意外的化合物,即相应的单羟基-五甲氧基-三萘嵌苯(1b)和奇特的三萘嵌苯衍生物(2)羟基,甲氧基,羰基和缩酮基以及稠合在核上的四氢呋喃部分。1b和2的X射线晶体分析表明,两种化合物均显示出变形的骨架。对它们的光学性质的研究表明,1a和1a的最低能量吸收带图1b是350nm附近的肩部带,而2产生了一个宽和弱带在573纳米。所有分子具有可忽略的荧光。在2的溶液中添加1,8-二氮杂双环[5.4.0] undec-7-ene会导致颜色从紫色变为橄榄棕色,使其适合用作pH指示剂。