CAS: 2564-83-2; 2,2,6,6-Tetramethyl-1-Oxylpiperidine

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2,2,6,6-四甲基哌啶置于氧气,Tris(P-Bromophenylammoniumyl) Hexachloroantimonate体系中,用 乙腈 用作溶剂,化学反应生成2,2,6,6-四甲基哌啶氧化物
参考文献:单线态氧检测的tempo / Epr方法的范围和局限性:电子转移的误导作用.
标题:单线态氧检测的tempo / Epr方法的范围和局限性:电子转移的误导作用.
摘要:对于许多生物学和生物医学研究,检测(1)o2的产生并量化其产生的产量至关重要.在可用的方法中,通过时间分辨近红外(trnir)发射检测单线态氧的特征性1270 Nm磷光是最直接和明确的方法.另一种间接方法是将电子顺磁共振(epr)与单线态氧探针结合使用.这是基于检测单线态氧将temp(2,2,6,6-四甲基哌啶)氧化后形成的tempo自由基.尽管tempo / Epr方法已被广泛采用,但它可能会产生误导性数据.本研究证明了这一点,其中比较了由trnir发射和tempo / Epr方法获得的单线态氧形成的量子产率与一组众所周知的光敏剂的比较.结果表明,当光敏剂的单重态或三重态激发态被temp有效地猝灭时,Tempo / Epr方法导致显着高估了单重态氧的产生,该电子作为电子供体.在这种情况下,Temp(+)自由基阳离子的产生,然后去质子化并与分子氧反应,会产生epr可检测的tempo信号,该
Doi:10.1016/j.Freeradbiomed.2014.08.020

专利信息

专利号:US-2009318592-A1
优先权日:2005-10-11
标 题 :Process for the Synthesis of Amine Ethers
发明人：FREY MARKUS; BROENNIMANN VALERIE
权利人:CIBA GEIGY CORP
摘要:The present invention relates to novel processes for the preparation of a sterically hindered amine ether by reacting a corresponding sterically hindered amine oxide with a ketone or an aldehyde with at least one reactive H in the presence of a peroxydisulphate. Products obtained by this process may be hydrogenated. The compounds made by these processes are particularly effective in the stabilization of polymer compositions against harmful effects of light, oxygen and/or heat and as flame-retardants for polymers.

专利号:US-2007191516-A1
优先权日:2004-03-15
标题 :Process for the synthesis of amine ethers
发明人：FREY MARKUS; RAST VALERIE; BRAIG ADALBERT; KRAMER ANDREAS
权利人:FREY MARKUS; RAST VALERIE; BRAIG ADALBERT; KRAMER ANDREAS
摘要:A process for the preparation of a sterically hindered amine ether which comprises reacting a corresponding sterically hindered aminoxide with a C 5 -C 18 alk-1-ene in the presence of an organic hydroperoxide and optionally hydrogenating the resulting product as well as the product mixtures obtained therewith and their use as stabilizers and flame retardants.

专利号:US-6858309-B2
优先权日:2001-03-28
标 题:Methods of polymerization
发明人：KAMBOURIS PETER; WHITTAKER MICHAEL; DAVIS TOM; BLAKEY IDRISS; DAY GARY M
权利人:POLYMERAT PTY LTD
摘要:The present invention provides improved methods for conducting living/controlled polymerization on polymeric solid supports. The improved methods allow polymerization to occur directly from the non-functionalized surface of a bulk support. In addition, polymerization may be re-initiated to provide co-polymers. The disclosed methods may employ the non-nitroxide-based RAFT and ATRP control agents that allow controlled polymerization to proceed at relatively low temperatures (<80° C.). Furthermore, these improved methods may provide graft polymers with decreased levels of “in-growthâ€? of the bulk solid support. The invention also provides substrate polymers, with improved properties for solid phase synthesis and diagnostic applications, which may be made by the disclosed methods.