Synthesis, Characterization and Protonation Behavior of Quinoxaline-Fused Porphycenes
作者:Daiki Kuzuhara、Mika Sakaguchi、Wataru Furukawa、Takuya Okabe、Naoki Aratani、Hiroko Yamada
DOI:10.3390/molecules22060908
日期:——
9,10-Quinoxaline-fused porphycenes 1a-H₂ and 1b-H₂ were synthesized by intramolecular McMurry coupling. As a result of the annulation of the quinoxaline moiety on the porphycene skeleton, 1a-H₂ and 1b-H₂ display absorption and fluorescence in the near infra-red (NIR) region. Additionally, the quinoxaline moieties of 1a-H₂ and 1b-H₂ act as electron-withdrawing groups, introducing lower reduction potentials
通过分子内 McMurry 偶联合成了 9,10-喹喔啉稠合卟啉 1a-H2 和 1b-H2。由于喹喔啉部分在卟啉骨架上成环,1a-H2 和 1b-H2 在近红外 (NIR) 区域显示出吸收和荧光。此外,1a-H2 和 1b-H2 的喹喔啉部分充当吸电子基团,引入比原始卟啉更低的还原电位。质子化发生在游离碱卟啉空腔中的氮原子处以及其镍配合物的喹喔啉部分处,从而产生二质子物质。