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   Articles with "methylmorpholine oxide" as a keyword



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AQUEOUS N -METHYLMORPHOLINE N -OXIDE AS A NEW MEDIUM FOR ALKYLATION OF PYRAZOLES

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recommendations! Published in 2018 at "Chemistry of Heterocyclic Compounds"

DOI: 10.1007/4474

Abstract: It 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… read more here.

Keywords: medium; alkylation pyrazoles; aqueous methylmorpholine; methylmorpholine oxide ... See more keywords
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Homogeneous alkalization of cellulose in N-methylmorpholine-N-oxide/water solution

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recommendations! Published in 2017 at "Cellulose"

DOI: 10.1007/s10570-017-1195-z

Abstract: Alkali cellulose is an important intermediate in the production of cellulose derivatives. N-methylmorpholine-N-oxide (NMMO)/H2O was used as a homogeneous reaction medium for the cellulose alkalization process to intensify the alkalization degree and improve the substitution… read more here.

Keywords: alkali cellulose; alkalization process; methylmorpholine oxide; cellulose ... See more keywords
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Regenerated cellulose from N-methylmorpholine N-oxide solutions as a coating agent for paper materials

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recommendations! Published in 2018 at "Cellulose"

DOI: 10.1007/s10570-018-1799-y

Abstract: The objective of the presented research was to determine the influence of cellulose coating, obtained from the cellulose solution in N-Methylmorpholine N-oxide (NMMO), on the structural and mechanical properties of paper. The effect of heating… read more here.

Keywords: methylmorpholine oxide; cellulose methylmorpholine; oxide solutions; paper ... See more keywords
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A cautionary note on “exothermic events” upon contact of carbodiimide coupling agents and the cellulose solvent N-methylmorpholine-N-oxide

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recommendations! Published in 2020 at "Cellulose"

DOI: 10.1007/s10570-020-03293-5

Abstract: The cellulose solvent N-methylmorpholine-N-oxide monohydrate (NMMO) reacts violently with carbodiimide coupling agents, such as the widely used DCC (dicyclohexylcarbodiimide) and EDC (1-ethyl-3-(3-dimethylaminopropyl)carbodiimide), which can cause explosions, heavy smoke generation and complete charring of the reaction… read more here.

Keywords: methylmorpholine oxide; carbodiimide coupling; solvent methylmorpholine; cellulose solvent ... See more keywords
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Aqueous N-methylmorpholine N-oxide as a new medium for alkylation of pyrazoles

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recommendations! Published in 2018 at "Chemistry of Heterocyclic Compounds"

DOI: 10.1007/s10593-018-2342-7

Abstract: It 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… read more here.

Keywords: medium; alkylation pyrazoles; aqueous methylmorpholine; methylmorpholine oxide ... See more keywords
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Quantification of N-methylmorpholine-N-oxide and its main degradation products by nuclear magnetic resonance spectroscopy

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recommendations! Published in 2020 at "Spectroscopy Letters"

DOI: 10.1080/00387010.2020.1844240

Abstract: Abstract An important part of Lyocell fibers production is solvent recycling. Determining the content of the degradation products in the solvent will be helpful to select a reasonable solvent recovery process. However, a suitable method… read more here.

Keywords: nuclear magnetic; methylmorpholine oxide; magnetic resonance; spectroscopy ... See more keywords
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Design and Fabrication of Membranes Based on PAN Copolymer Obtained from Solutions in N-methylmorpholine-N-oxide

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recommendations! Published in 2022 at "Polymers"

DOI: 10.3390/polym14142861

Abstract: An original method is proposed for preparing highly concentrated solutions of PAN copolymer in N-methylmorpholine-N-oxide (NMMO) and forming membranes for nanofiltration from these solutions. The high activity of the solvent with respect to the polymer… read more here.

Keywords: pan copolymer; methylmorpholine oxide; obtained solutions; pan membranes ... See more keywords
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Experimental Study on the Manufacturing of Functional Paper with Modified by N-Methylmorpholine-N-oxide Surfaces

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recommendations! Published in 2023 at "Polymers"

DOI: 10.3390/polym15030692

Abstract: The manufacturing of paper with new functional properties is a current problem today. A method of modifying the surface layer of paper by the partial dissolution of cellulose on its surface is proposed. N-Methylmorpholine-N-oxide (NMMO)… read more here.

Keywords: modified methylmorpholine; methylmorpholine oxide; surface; paper modified ... See more keywords