Results 181 to 190 of about 426,028 (222)
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Chemoselective, metal-mediated oxidation of (dienol)iron complexes with N-methylmorpholine N-oxide
Tetrahedron Letters, 1998Abstract The oxidation of (dienol)iron complexes to the corresponding (dienal)iron complexes by amine N-oxides is reported. This oxidation is selective for a hydroxyl group adjacent to the complexed diene.
Dasgupta, Bireshwar, Donaldson, William
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European Polymer Journal, 2017
Abstract Highly concentrated solutions of acrylonitrile copolymers (PAN) in N-methylmorpholine N-oxide (NMMO) were obtained via the solid-phase activation method. Specific interactions in the system at different stages of the dissolution process starting from solid-state activation and finishing with a transition to a viscous state were studied by IR
Valery Kulichikhin +7 more
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Abstract Highly concentrated solutions of acrylonitrile copolymers (PAN) in N-methylmorpholine N-oxide (NMMO) were obtained via the solid-phase activation method. Specific interactions in the system at different stages of the dissolution process starting from solid-state activation and finishing with a transition to a viscous state were studied by IR
Valery Kulichikhin +7 more
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Chitosan—Cellulose Films Fabricated from Mixtures of Polysaccharides in N-methylmorpholine N-oxide
Fibre Chemistry, 2002The possibility of fabricating composite chitosan—cellulose films from mixed solutions of polysaccharides in MMO was demonstrated. Unoriented films of inhomogeneous phase composition exhibit elevated swelling in aqueous media (500-600%) and could be of great interest as separating membranes or film dressings.
S. Z. Rogovina +3 more
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Tetrahedron, 2002
Abstract The two carbon-centered radicals 4-morpholinomethyl ( 4 ) and 4-methylmorpholin-3-yl ( 5 ), generated from the primary cation radical intermediate 3 by β-deprotonation, are the major radical species in reaction mixtures of N -methylmorpholine- N -oxide ( 1 ) as demonstrated by trapping reactions with γ-tocopherol.
T Rosenau, A Potthast, H Sixta, P Kosma
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Abstract The two carbon-centered radicals 4-morpholinomethyl ( 4 ) and 4-methylmorpholin-3-yl ( 5 ), generated from the primary cation radical intermediate 3 by β-deprotonation, are the major radical species in reaction mixtures of N -methylmorpholine- N -oxide ( 1 ) as demonstrated by trapping reactions with γ-tocopherol.
T Rosenau, A Potthast, H Sixta, P Kosma
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Aqueous N-methylmorpholine N-oxide as a new medium for alkylation of pyrazoles
Chemistry of Heterocyclic Compounds, 2018It is shown that alkylation of pyrazoles with (E)/(Z)-1,3-dichlorobut-2-enes can be carried out in an alkaline aqueous medium in the presence of N-methylmorpholine N-oxide. In some cases, this technique may substitute phase-transfer catalysis. Conformational analysis of the reaction products showed that a mixture of (E)/(Z) isomers is formed in a ratio
Ani H. Hasratyan +6 more
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RuCl2(PPh3)3 catalyzed oxidation of secondary alcohols with N-methylmorpholine N-oxide
Proceedings / Indian Academy of Sciences, 1986Catalytic amounts of RuCl2(PPh3)3 in the presence of excess of N-methylmorpholine N-oxide (NMO) in DMF, oxidizes secondary alcohols to ketones. Spectral and electrochemical studies reveal the formation of an oxocomplex of Ru(IV), on adding excess of NMO. In the proposed mechanism, the Ru(IV)-oxo complex formed from Ru(II) and NMO, attacks the substrate
K. Vijayasri +2 more
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The purification process and side reactions in the N-methylmorpholine-N-oxide (NMMO) recovery system
Cellulose, 2021Yaoxian Guo +7 more
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Schematic phase diagram of the cellulose— N-methylmorpholine-N-oxide monohydrate system
Polymer Science U.S.S.R., 1989Abstract Accumulated, published experimental data on the properties and special behavioural features of the cellulose-N-methylmorpholine-N-oxide monohydrate system, which contains information on phase transitions are discussed. On the basis of the accumulated data on the formation of a crystalline complex (inclusion compounds) of cellulose with a ...
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Ruthenium(III)-catalysed oxidation of secondary alcohols by N-methylmorpholine N-oxide (NMO)
Journal of Molecular Catalysis, 1987Abstract A catalytic amount of RuCl3 in the presence of excess of N-methyl-morpholine N-oxide (NMO) in DMF oxidizes secondary alcohols to ketones. Spectral studies reveal the formation of a Ru(V)-oxo species which is formed in situ on adding N-oxide. The formation of Ru(V) has been established by cyclic voltammetric studies.
K. Vijayasri, J. Rajaram, J.C. Kuriacose
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Solutions of mixtures of cellulose and synthetic polymers in N-methylmorpholine-N-oxide
Polymer Science Series A, 2009Phase state and morphological features of solutions of cellulose blends with rigid-chain thermotropic LC copolyesters and isotropic poly(m-phenyleneisophthalamide) in the highly polar donor solvent N-methylmorpholine-N-oxide are studied by DSC and polarization microscopy.
L. K. Golova +5 more
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