TEMPO oxidationTEMPO = Tetra methyl pentahydropyridine oxide. 2,2,6,6-Tetramethylpiperidinyloxy is a stable nitroxyl radical, which serves in oxidations as catalyst.doi:10.1007/978-3-319-03979-4_273Jie Jack LiSpringer International Publishing...
TEMPO是一种典型的哌啶类氮氧自由基。它具有捕获自由基、猝灭单线态氧和选择性氧化等功能,是一种非常有效的氧化催化剂,在有机合成中用作各种醇和多元醇类氧化反应的催化剂,将伯醇氧化为醛,具高选择性,不再氧化至羧酸;将仲醇氧化为酮。本品有毒,具腐蚀性,可经皮肤吸收,有强烈刺激性。
The TEMPO oxidation using PhI(OAc)2as a reoxidant.[5] A 250-mL round-bottomed flask equipped with a Teflon-coated magnetic stirring bar is charged with the following order of the reagents: acetonitrile (28 mL), (Z)-3,7-dimethyl-2,6-octadien-1-ol (nerol) (5.70 mL, 32.5 mmol), aqu...
The TEMPO-oxidized cellulose was soluble in water for valuable polyelectrolytes and intermediates. Keywords: cellulose; degree of oxidation; TEMPO 1. Introduction Cellulose is one of the most luxuriant natural macromolecules in the world. As one of the high crystalline structural polysaccharides, ...
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()-2-hydroxymethyl-2-alkenals, which are utilized as an intermediate for the expeditious synthesis of 4-alkylidene-2-penten-5-olides.Graphical abstractOxidation of 2-alkylidene-1,3-propanediols with a 4-BzOTEMPO鈥揇AIB system afforded ()-2-hydroxymethyl-2-alkenals, useful for synthesis of 4...
2,2,6,6-Tetramethylpiperidine-1-oxyl radical (TEMPO)-catalyzed oxidation enables efficient and position-selective conversion of primary hydroxy groups in water-soluble and water-insoluble polysaccharides to sodium carboxylate groups under mild conditions
TEMPOOxidationSEC-MALLSThe 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated oxidation was applied to water-insoluble (1 → 3)-β- d-glucans, paramylon and curdlan, to prepare water-soluble oxidized products. When the addition level of NaClO used as the primary oxidant was 15 ...
TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl radical)-mediated oxidation was applied to β-chitins, originating from tubeworm and squid pen, to prepare chitin nanofibrils. Water-insoluble fractions of the TEMPO-oxidized β-chitins were obtained in various ratios by controlling the addition level...
1) TEMPO-mediated oxidation TEMPO氧化2) TEMPO(2,2,6,6-tetramethy1-1-piperidine-N-oxyl free radical) TEMPO(2,2,6,6-四甲基哌啶氮氧自由基)3) 2,2,6,6-tetramethyl-1-piperidine-N-oxyl free radical(TEMPO) 2,6,6-四甲基哌啶氮氧自由基(TEMPO)...