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首页> 外文期刊>Organic Chemistry Frontiers >Homolysis/mesolysis of alkoxyamines activated by chemical oxidation and photochemical-triggered radical reactions at room temperature
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Homolysis/mesolysis of alkoxyamines activated by chemical oxidation and photochemical-triggered radical reactions at room temperature

机译：均裂/ mesolysis alkoxyamines激活化学氧化和photochemical-triggered激进的反应在室温下

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摘要

Alkoxyamines, which are connected with a phenol moiety by a (substituted) methylene bridge undergo homolytic cleavage upon chemical oxidation or a photo-induced hydrogen transfer. This selectively triggered reaction yields a nitroxide radical. In the presence of an excess of lead dioxide as the oxidant in tert-butylbenzene as solvent, spontaneous, instantaneous and almost quantitative generations of nitroxides from various alkoxyamines are observed at room temperature, which support activation energies for the cleavage lower than 100 kJ mol(-1). The rate and the amount of released nitroxide depend on the amount of "catalyst" and the structure of alkoxyamines.
机译：Alkoxyamines,与苯酚一部分(取代)亚甲基桥经过对化学均裂氧化或photo-induced氢转移。这种选择性反应产生一个触发硝基氧自由基。二氧化铅作为氧化剂tert-butylbenzene作为溶剂,自发的,瞬时,几乎定量的一代从各种alkoxyamines硝基氧在室温下观察,支持乳沟低于激活能量100 kJ摩尔(1)。硝基氧依赖大量的释放“催化剂”和alkoxyamines的结构。

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