- Synthesis of 1,10-N,N′-phenanthroline dioxides using HOF·CH3CN complex
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(Chemical Equation Presented) HOF·CH3CN, a very efficient oxygen-transfer agent, made readily from F2, H2O, and CH3CN, was reacted with various 1,10-phenanthroline derivatives to form the corresponding N,N′-dioxides in good yields and short reaction times.
- Carmeli, Mira,Rozen, Shlomo
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- Formation of 1,10-phenanthroline-N,N′-dioxide under mild conditions: The kinetics and mechanism of the oxidation of 1,10-phenanthroline by peroxomonosulfate ion (Oxone)
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This paper confirms the unexpected formation of 1,10-phenanthroline-N,N′-dioxide (phenO2) when 1,10-phenanthroline (phen) is oxidized by peroxomonosulfate ion (PMS) in a neutral aqueous solution. The kinetics of oxidation of phen by PMS feature
- Bellér, Gábor,Szabó, Mária,Lente, Gábor,Fábián, István
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supporting information
p. 5345 - 5353
(2016/07/14)
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- Recent developments in the chemistry of heteroaromatic N -oxides
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Selected developments in the chemistry of heteroaromatic N-oxides since 2001 are presented in this review. The use of these N-oxides, both in late-transition-metal-catalyzed oxidations of carbon-carbon triple bonds and in regioselective C-H functionalizations of the heteroarene, are contemporary topics of interest and the focus of the discussion. 1 Introduction 2 Synthesis of Heteroaromatic N-Oxides 2.1 Direct Oxidation of Hindered Heteroarenes 2.2 Through Construction of Heteroaromatic Rings 3 Heteroaromatic N-Oxides as Oxidants 3.1 Alkyne Oxidation 3.2 Allene Oxidation 3.3 Carbene Oxidation 4 Heteroaromatic N-Oxides as Substrates 4.1 Deoxygenative ortho-C-H Functionalization with Prior Activation 4.2 Deoxygenative ortho-C-H Functionalization with Nonstabilized Carbanions 4.3 Nondeoxygenative C-H Functionalization 4.3.1 ortho-C-H Functionalization 4.3.2 N-Oxide Directed ortho-Alkyl C-H Functionalization 4.3.3 N-Oxide Directed Remote C-H Functionalization 4.4 1,3-Dipolar Cycloaddition 5 Conclusion and Outlook.
- Wang, Youliang,Zhang, Liming
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- Dipyridine-based compound and the use thereof
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The present invention discloses a dipyridine-based compound which can be used as electron-transporting and/or hole blocking material or phosphorous host in organic electroluminescence devices is disclosed. The mentioned dipyridine-based compound is represented by the following formula: wherein R1 and R2 are identical or different, and R1 and R2 are independently selected from the group consisting of: hydrogen atom, aryl moiety, hetero cycle, multiple fused ring, multiple fused ring with hetero atom(s); A is selected from the following group: wherein R3 and R4 are identical or different, R5 and R6 are identical or different, R7 and R8 are identical or different, R3, R4, R7, R8 are independently selected from the group consisting of: alkyl moiety and aryl moiety, and R5, R6 are independently selected from the group consisting of: alkyl moiety, aryl moiety and arylamine moiety.
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Page/Page column 7-8
(2008/06/13)
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- At last, 1,10-phenanthroline-N,N-dioxide, a new type of helicene, has been synthesized using HOF · CH3CN
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For more than 50 years the synthesis of 1,10-phenanthroline-N,N'-dioxide (2) has been sought. The reason for the failure of all the earlier attempts is that the limited space in the bay area of the starting material 1,10- phenanthroline (1) cannot accommodate two oxygen atoms. The oxidation has now been achieved with the oxygen-transfer agent HOF. CH3CN, and X-ray studies have revealed that the product is not planar but is a new type of helicene - in this way the 'space problem' for the two oxygen atoms has been solved.
- Rozen, Shlomo,Dayan, Sharon
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p. 3472 - 3473
(2007/10/03)
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