Results 21 to 30 of about 2,627,799 (128)
Advanced Sustainable Systems, Volume 6, Issue 3, March 2022., 2022 Cellulose nanocrystals (CNCs), as an emerging renewable and biodegradable nanomaterial, using numerous strategies for their production have been developed. Here, the environmental impact of each CNCs production method is qualitatively discussed in the context of the 12 principles of green chemistry to identify the processes with the minimum ...
Yimian Tang, Han Yang, Silvia Vignolini
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SNAr Isocyanide Diversification
European Journal of Organic Chemistry, Volume 2022, Issue 3, January 21, 2022., 2022 A fast method for the easy access of 4‐amino substituted 3‐nitro‐phenyl isocyanides was developed under room temperature with moderate to high yields. The products are very reactive in a number of tested typical multicomponent reactions. Abstract Isocyanides are important building blocks in organic synthesis; however, their synthesis is time and ...
Qiang Zheng +2 more
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A novel synthesis of tert-leucine via a Leuckart type reaction
, 1998 An efficient synthesis of racemic tert-leucine from trimethylpyruvic acid using a Leuckart type reaction is described. A facile resolution of an intermediate with α-methylbenzylamine allows entry into either (R)-or (S)-tert ...
Adger, Brian M. +4 more
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Chemistry–Methods, Volume 6, Issue 6, June 2026.An organic‐synthetic method for smooth N‐alkylation of a secondary amine with an aldehyde as reagents and glucose as a reducing agent in aqueous medium has been developed, exemplified for the N‐benzylation of 2‐methylpyrrolidine. This transformation proceeds through enzyme catalysis with an imine reductase as a biocatalyst and a glucose dehydrogenase ...
Kateryna Zelenska, Harald Gröger
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Drug Testing and Analysis, Volume 18, Issue 6, Page 725-738, June 2026.This study investigates the effect of the reaction temperature (step 1) and reaction time (step 1 and 2) on the conversion efficiency and impurity profile of amphetamine synthesized via the Leuckart method. Conversion efficiency and impurity profile were assessed using gas chromatography–flame ionization detection (GC–FID) and GC–mass spectrometry (GC ...
Maartje C. M. Verhoeven +7 more
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Kurze Poetische Beschreibung der, den 15. Octobr. 1576. celebrirten Inauguration dieser Universität Helmstedt Wollte der Herzoglichen Deutschen Gesellschaft zur geneigten Beurtheilung unterwerfen ein der Poesie beständiger Verehrer Gottlob Friedrich Carl Bauer aus Stolberg der Gottesgelahrtheit Befl. [PDF]
HelmstedtVorlageform des Erscheinungsvermerks: Helmstädt gedruckt durch Michael Günther Leuckart ...
Bauer, Gottlob Friedrich Carl
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EFSA Journal, Volume 23, Issue 1, January 2025.Abstract The EFSA Panel on Food Additives and Flavourings (FAF) was requested to evaluate the safety of 3‐[3‐(2‐isopropyl‐5‐methyl‐cyclohexyl)‐ureido]‐butyric acid ethyl ester [FL‐no: 16.136] as a new flavouring substance, in accordance with Regulation (EC) No 1331/2008.
EFSA Panel on Food Additives and Flavourings (FAF) +27 more
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The Chemistry of Levulinic Acid: Its Potential in the Production of Biomass‐Based Chemicals
Advanced Synthesis &Catalysis, Volume 366, Issue 23, Page 4846-4888, December 3, 2024.Abstract Biomass has been identified as the ultimate sustainable resource for all carbon‐based consumer products of the chemical industries in the future. Its catalytic conversion leads to the formation of various platform chemicals that could partially or even fully replace the fossil‐based building blocks that have been currently used in synthetic ...
Csaba Árvai +3 more
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, 1997 Department of Chemistry, Department of Mathematics & Statistics, Punjab Agricultural University, Ludhiana-141 004 Manuscript received 23 February 1995, revised 28 August 1995, accepted 17 October 1995 Synthesis of Quaternary Salts of Ammonia from ...
M. L. SHARMA +3 more
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Reactive Eutectic Media for Lignocellulosic Biomass Fractionation
ChemSusChem, Volume 17, Issue 16, August 26, 2024.This study introduces an alternative approach towards lignocellulosic biomass fractionation based on employment of reactive eutectic media composed of ammonium formate and different organic acids. The method promises a considerable process intensification by simultaneous separation of high purity cellulose pulp, lignin isolation as a cationically ...
Helen Schneider +4 more
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