Oxidative Transformation of a Tetrathia S-Confused Isophlorin into Porphyrin Cation
作者:Santosh P. Panchal、Venkataramanarao G. Anand
DOI:10.1021/acs.orglett.7b02317
日期:2017.9.15
properties of first generation S-confused isophlorins are described. Despite structural resemblance to a confused porphyrin, spectroscopic and computational studies reveal weak paratropic ring current effects in these 20π macrocycles. They display redox properties atypical of parent tetrathia isophlorins. Experimental evidence supports the oxidation of an unstable 19π neutral radical, as a transient intermediate
描述了第一代S-混淆的异佛洛林的合成和氧化还原特性。尽管在结构上与混乱的卟啉相似,但光谱和计算研究显示在这些20π大环中微弱的抛物环电流效应。它们显示出非典型的母体四硫异佛洛林的氧化还原特性。实验证据支持将不稳定的19π中性自由基作为过渡中间体进行氧化,以形成独特的18π芳香族单阳离子物质。光谱和结构表征揭示了不依赖于抗芳族异类胡桃素的化学的依赖于取代基的大环氧化。