Reversible Photooxygenation of Alkynylanthracenes: Chemical Generation of Singlet Oxygen under Very Mild Conditions
作者:Werner Fudickar、Torsten Linker
DOI:10.1002/chem.201102230
日期:2011.12.2
In the dark and very fast: The generation of singlet oxygen (1O2) from endoperoxides, which are readily available by photooxygenation of the corresponding anthracenes, proceeds within minutes in the dark (see scheme), a rate hitherto unknown for other anthracenes or naphthalenes. This provides an efficient chemical source of singlet oxygen under very mildconditions.
在黑暗中并且非常快:在黑暗中,几分钟内即可从内过氧化物中产生单线态氧(1 O 2),这些光可通过相应的蒽的光氧化而容易地获得(见方案),这是其他蒽或其他蒽迄今所未知的速率萘。这在非常温和的条件下提供了有效的单重态氧化学来源。
Direct CC triple bond formation from the CC double bond with potassium tert-butoxide in dimethylformamide containing trace amounts of oxygen
A novel and facile method for direct acetylenic bond formation from the CC double bond by treatment with KOBut in dimethylformamide has been found both in a 9,10-bis(4′-substituted styryl)anthracene series and in a 4-substituted 4′-nitro-stilbene series; its scope and limitations have been examined.
Why Triple Bonds Protect Acenes from Oxidation and Decomposition
作者:Werner Fudickar、Torsten Linker
DOI:10.1021/ja306056x
日期:2012.9.12
Furthermore, the products obtained from thermolysis and the kinetics of the thermolysis are investigated. Density functional theory is applied in order to predict reaction energies, frontier molecular orbital interactions, and radical stabilization energies. The combined results allow us to describe the mechanisms of the oxidations and the subsequent thermolysis. We found that the alkynyl group not only