- 3-methyl-4-oxa-5-azahomoadamantane as an organocatalyst for the aerobic oxidation of primary amines to oximes in water
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A simple and efficient catalytic system for the aerobic oxidation of primary amines into corresponding oximes has been developed, with 3-methyl-4-oxa-5-azahomoadamantane as catalyst, acetaldoxime as co-catalyst and water as solvent. This process, which uses oxygen (O2) as an economic and green oxidant and water as a green solvent, tolerates a wide range of substrates, affording the target oximes in moderate to excellent yields. It was found that high selectivity was achieved when 3-methyl-4-oxa-5-azahomoadamantane was used, and E-type oximes were the only detected products. A possible mechanism for this catalytic process is proposed.
- Yu, Jiatao,Jin, Yong,Lu, Ming
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- Chemoselective preparation of oximes, semicarbazones, and tosylhydrazones without catalyst and solvent
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A simple and versatile method for the synthesis of oximes, semicarbazones, and tosylhydrazones of aldehydes in the presence of ketones without catalyst and solvent is presented.
- Bandgar, Babasaheb P.,Sadavarte, Vaibhav S.,Uppalla, Lav S.,Govande, Rahul
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- A novel and efficient catalytic system including TEMPO/acetaldoxime/InCl3 for aerobic oxidation of primary amines to oximes
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A simple and efficient catalytic system including TEMPO/acetaldoxime/InCl3 for aerobic oxidation of primary amines to corresponding oximes by using toluene as the solvent is described. This practical method can use O2 as the economic and green oxidant, tolerate a wide range of substrates, which can afford the target oximes in moderate to excellent yields.
- Yu, Jiatao,Cao, Xiaohua,Lu, Ming
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supporting information
p. 5751 - 5755
(2015/02/02)
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- Simple, efficient and green synthesis of oximes under ultrasound irradiation
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The condensation of aldehydes andketones with hydroxylamine hydrochloride gives oximes in 81-95%yields in water andEtOH under ultrasound irradiation. Compared to conventional methods, the main advantages of the present procedure are milder reaction conditions, shorter reaction times and higher yields.
- Khoramabadi-Zad,Azadmanesh,Rezaee
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p. 192 - 194
(2013/01/09)
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- BIFUNCTIONAL HETEROCYCLIC COMPOUNDS AND METHODS OF MAKING AND USING SAME
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The invention provides a family of bifunctional heterocyclic compounds useful as anti-infective, anti-proliferative, anti-inflammatory, and prokinetic agents. The invention also provides methods of making the bifunctional hetercyclic compounds, and methods of using such compounds as anti-infective, anti-proliferative agents, anti-inflammatory, and/or prokinetic agents.
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Page/Page column 319
(2010/02/06)
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- Ceric ammonium nitrate oxidation of aldoximes in aliphatic nitriles as solvents: A new way for synthesis of 1,2,4-oxadiazoles
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Oxidation of aromatic aldoximes with one-electron oxidant ceric ammonium nitrate CAN in acetonitrile and propionitrile, has been investigated. Aromatic nitrile oxides, formed in situ, underwent 1,3-cycloaddition with aliphatic nitriles and 5-alkyl-3-aryl-1,2,4-oxadiazoles are produced in moderate to high yields. The mechanism of the reaction based on the transformations of intermediate aldazine di-N-oxides is discussed.
- Giurg,Mlochowski
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p. 1093 - 1101
(2007/10/03)
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- Imines and Derivatives. Part 20. N-Phosphinoyloxaziridines: Synthesis and Structural Characterisation by Nuclear Magnetic Resonance Spectroscopy and a Crystal Structure of 3-(4-Chlorophenyl)-2-(diphenylphosphinoyl)oxaziridine
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The preparation of a new class of oxaziridines containing an N-phosphinoyl group is described.The compounds were obtained by peroxyacid oxidation of N-phosphinoyl imines under basic or neutral conditions, and characterised by n.m.r. spectroscopy.Revelant 2JPC, 3JPH, and 1JCH coupling constants are reported.An X-ray structure analysis of the title compound establishes that the 2-diphenylphosphinoyl group is trans to the 3-aryl ring.The P-N bond length (1.76 Angstroem) is abnormally high for an aminophosphorus(v) compound and the nitrogen atom is pyramidal (ΣN=280 deg).This geometry is interpreted in terms of an unusually low degree of ?-bonding between nitrogen and phosphorus due to the high s-character of the nitrogen lone pair.
- Boyd, Derek R.,Malone, John F.,McGuckin, M. Rosaleen,Jennings, W. Brian,Rutherford, Mark,Saket, Barahman M.
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p. 1145 - 1150
(2007/10/02)
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