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Integrating TEMPO and Its Analogues with Visible‐Light Photocatalysis
Chemistry - An Asian Journal ( IF 3.5 ) Pub Date : 2018-02-19 , DOI: 10.1002/asia.201701765
Xianjun Lang 1 , Jincai Zhao 2
Affiliation  

Visible light has risen to become a very important facilitator for selective radical reactions enabled by well‐cognized photocatalysts. The renaissance of visible‐light photocatalysis on this matter partly relies on integrating it with other fields of catalysis. In parallel, 2,2,6,6‐tetramethylpiperidin N‐oxide (TEMPO), a quintessential persistent radical, has a wide range of uses owing to its exceptional redox behavior, which gives rise to its latest prominence in catalysis. Therefore, integrating the catalysis of TEMPO with photocatalysis to perform visible‐light‐induced selective reactions becomes a very convenient marriage of merits. In this context, the integration of different types of photocatalysts, including metal complexes, metal‐free organic dyes, and semiconductors, with TEMPO for outstanding organic transformations will be summarized. To expand further the catalytic repertoire, the integration of TEMPOH analogues such as NHPI (N‐hydroxyphthalimide) and NHS (N‐hydroxysuccinimide) with photocatalysis will also be discussed. Hopefully, these advances will pave the way for more breakthroughs by integrating TEMPO and its analogues with photocatalysis to lead to a valuable blueprint for visible‐light‐induced selective organic transformations.

中文翻译:

将TEMPO及其类似物与可见光光催化相结合

可见光已成为公认的光催化剂促成选择性自由基反应的重要促进剂。在此问题上,可见光光催化的复兴部分取决于将其与其他催化领域整合在一起。平行的2,2,6,6-四甲基哌啶N氧化物(TEMPO)是一种典型的持久性自由基,由于其出色的氧化还原行为而具有广泛的用途,这使其在催化领域的最新发展成为可能。因此,将TEMPO催化与光催化结合起来以进行可见光诱导的选择性反应成为一种非常方便的优点结合。在这种情况下,将总结各种类型的光催化剂(包括金属配合物,无金属的有机染料和半导体)与TEMPO的集成,以实现出色的有机转化。为了进一步扩展催化库,整合了TEMPOH类似物,例如NHPI(N-羟基邻苯二甲酰亚胺)和NHS(N-羟基琥珀酰亚胺)与光催化作用也将进行讨论。希望这些进展将TEMPO及其类似物与光催化相结合,为可见光诱导的选择性有机转化提供有价值的蓝图,从而为进一步突破铺平道路。
更新日期:2018-02-19
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