We describe a versatile and very efficient synthesis of previously unknown substituted 5,14-dihydro-5,7,12,14-tetraazapentacenes (DHTAPs). A structural study by NMR spectroscopy showed that the conjugated pi-system of the pentacyclic skeleton rearranges depending on the electronic effect of the substituent(s).
我们描述了以前未知的取代的5,14-二氢-5,7,12,14-四氮杂戊酮(
DHTAPs)的通用且非常有效的合成。通过NMR光谱的结构研究表明,五环骨架的共轭π-系统根据取代基的电子效应而重排。