Anaerobic photocyclization of <i>ortho</i><scp>‐dialkylamino</scp> substituted <i>stiff</i><scp>‐stilbenes</scp>
作者:Yi‐Ning Hung、Yi‐Ching Wang、Zi‐Jian Chen、Jye‐Shane Yang
DOI:10.1002/jccs.202300427
日期:2024.2
The photocyclization of diarylethenes toward polycyclic aromatic hydrocarbons and analogs has been well-documented. However, stiff-stilbene was reported to be inactive, and examples of photocyclization-induced deamination remain unknown. Here, we report that ortho-(N,N-dimethylamino)-stiff-stilbene (1a) undergoes efficient photocyclization-induced deamination, forming the dicyclopenta-fused phenanthrene
二芳基乙烯光环化生成多环芳烃及其类似物已有充分记录。然而,据报道,刚性二苯乙烯是无活性的,并且光环化诱导的脱氨基的例子仍然未知。在这里,我们报道了邻-( N,N-二甲基氨基)-硬-二苯乙烯( 1a )在厌氧条件下经历了有效的光环化诱导脱氨,形成双环五稠合菲( DCPP ),产率良好(65%)。具有不同邻氨基取代基 ( 1b–1g ) 或邻甲氧基 ( 1h ) 基团的硬二苯乙烯的相对反应性,以及邻-( N,N-二甲基氨基)二苯乙烯(2a和2aMe)的相对反应性,提供了见解分为取代基和结构效应。