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Cyclic voltammetry of phenazines and quinoxalines including mono- and di-N-oxides. Relation to structure and antimicrobial activity [PDF]

Chemico-Biological Interactions, 1986
Cyclic voltammetry data were obtained for eight phenazines and phenazine-N-oxides, and eleven quinoxalines and quinoxaline-N-oxides: 1,6-phenazine-diol-5,10-dioxide (iodinin), iodinin copper complex, 6-methoxy-1-phenazinol-5,10-dioxide 1,6-dimethoxyphenazine-5-oxide, 1,6-phenazinediol, 1,6-dimethoxyphenazine, quinoxaline-1,4-dioxide, 2 ...
Michael Ryan, P Kovacic
exaly   +5 more sources

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Access to tetrahydrophenanthridine N-oxides via Rh(III)-catalyzed cascade C–H activation/cyclization of cyclic 2-diazo-1,3-diones and aryloximes

Tetrahedron, 2023
Yongjia Shang, Wangcheng Hu, Xinwei He   +2 more
exaly   +2 more sources

A Novel and Efficient Deoxygenation of Hetero Cyclic N-Oxides Using ZrCl4/NaBH4

Chemistry Letters, 1999
Abstract A practical and novel reagent system ZrCl4/NaBH4 is used for the deoxygenation of N-Oxides to amines is described.
K Purushothama Chary, G Hari Mohan, D S Iyengar   +2 more
openaire   +1 more source

Copper-catalyzed cross-dehydrogenative coupling of pyridine N-oxides with cyclic ethers

Journal of Organometallic Chemistry, 2016
Highly chemo- and regioselective synthesis of 2-alkylpyridine N-oxides from pyridine N-oxides and cyclic ethers has been developed through copper-catalyzed CDC reactions using CuO as the catalyst under mild reaction conditions. Optimization study showed that, K2S2O8 is the best oxidant for the reaction and the mechanistic study proved the radical ...
Ebrahim Kianmehr, Nasser Faghih, Saeed Karaji, Yousef Amiri Lomedasht, Khalid Mohammed Khan   +4 more
openaire   +1 more source

An Efficient and Chemoselective Deoxygenation of Hetero Cyclic N-Oxides Using Licl/nabh₄

Synthetic Communications, 2000
Abstract A practical & novel reagent system L1C1/NaBH4 is used for the deoxygenation of N-Oxides to amines is described.
S. Raja Ram, K. Purushothama Chary, D. S. Iyengar   +2 more
openaire   +1 more source

Cyclization of N,N-diethylgeranylamine N-oxide in one-pot operation: preparation of cyclic terpenoid-aroma chemicals

Tetrahedron Letters, 2008
Acid promoted cyclization of the geranylamine N-oxide (E)-4 followed by base-catalyzed intramolecular aldol condensation afforded 1-acetyl-4,4-dimethyl-1-cyclohexene (7) in one-pot operation. Reduction of 7, which possess strong fruity odor, followed by lipase-catalyzed kinetic resolution furnished the acetate (R)-26 (>49.9% yield, >99% ee) and the ...
Kunihiko Takabe, Takashi Yamada, Takenori Miyamoto, Nobuyuki Mase   +3 more
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A cyclic voltammetric study of some quinoxaline di-n-oxides and quinoxalines in acetonitrile: substituent effect on the cathodic reduction

Electrochimica Acta, 1987
Abstract The cathodic reductions of two series of substituted quinoxaline di- N -oxides and quinoxalines in acetonitrile were measured in the potential range of 0 to −2.0 V and 0 to −2.3 V vs sce , respectively. Two irreversible reductions were observed in the first series, and one reversible reduction for the second.
K.R. Barqawi, M.A. Atfah
openaire   +1 more source