Molecular Oxygen as a Redox Catalyst in Intramolecular Photocycloadditions of Coumarins
作者:Darius Paul Kranz、Axel Georg Griesbeck、Ronald Alle、Raul Perez-Ruiz、Jörg Martin Neudörfl、Klaus Meerholz、Hans-Günther Schmalz
DOI:10.1002/anie.201201222
日期:2012.6.11
Oxygen as a catalyst! While oxygen is usually excluded in nonoxidative photochemical reactions, the photocycloaddition of 3‐(alk‐4‐en‐1‐yl)‐substituted coumarins greatly benefits from the presence of O2, which was shown to act as a redox catalyst, preferentially in combination with the common antioxidant 3,5‐di‐tert‐butyl‐4‐hydroxytoluene (BHT).
氧气作为催化剂!尽管在非氧化性光化学反应中通常会排除氧气,但3-(alk-4-en-1-基)取代的香豆素的光环加成反应会极大地受益于O 2的存在,O 2被证明是一种氧化还原催化剂,优先用于与常见的抗氧化剂3,5-二叔丁基-4-羟基甲苯(BHT)结合使用。