从tribenzothiepine S-oxides中进行光诱导的SO挤出:三乙烯核心的前体方法
Pablo Simón Marqués1, Aissam Okba1,2, Nicolas Bréfuel1
1CEMES, Université de Toulouse, CNRS, 29 rue Marvig, Toulouse, 31055, France.
Chemistry (Weinheim an der Bergstrasse, Germany)
|November 7, 2025
概括
这项研究引入了一种新的可光激活的前体,用于合成三烯,一种复杂的多环芳 (PAH). 这种新方法使用的tribenzothiepine S-氧化物在暴露在紫外线下转化为trifenylene,提供了一条通往功能性材料的多功能途径.
科学领域:
- 有机化学 有机化学
- 材料科学 材料科学 材料科学
- 摄影化学的使用.
背景情况:
- 前体方法可以合成不溶性/不稳定的多环芳 (PAHs).
- 目前使用回循环添加和脱碳的方法限制了结构多样性.
- 新的反应性方案对于扩大前体方法至关重要.
研究的目的:
- 为了研究tribenzo[b,d,f]thiepine S-oxide作为三烯的可光激活前体.
- 为前体方法探索新的光化学转换.
- 开发三烯合成的绿色路线.
主要方法:
- 使用mCPBA和基的易斯酸进行tribenzothiepine S-oxide异构体的化学和立体选择性合成.
- 光谱分析和基于DFT的机理学研究.
- 在溶液和固态中对异构体进行紫外线照射.
主要成果:
- 合成了稳定的tribenzothiepine S-oxide的外异和内异构体.
- 观察到立体依赖的光化学行为.
- 紫外线照射将外异构体转化为三烯,通过SO挤出产生高达90%的产量.
- 在SO挤出之前,Endo异构体被光异构化为exo异构体.
- 固态光转换证明了后处理的潜力.
结论:
- 三[b,d,f]西S氧化物作为有效的光激活烯的前体.
- 异构体的立体化学决定了它们的光化学命运.
- 这项工作扩展了前体方法,采用了新的SO挤出途径.
- 循环硫氧化物为三烯基材料的绿色固态合成提供了潜力.
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