Search engine for discovering works of Art, research articles, and books related to Art and Culture
Javascript must be enabled to continue!
Mechanochemical Lignin-Mediated Strecker Reaction
View through CrossRef
A mechanochemical Strecker reaction involving a wide range of aldehydes (aromatic, heteroaromatic and aliphatic), amines, and KCN afforded a library of α-aminonitriles upon mechanical activation. This multicomponent process was efficiently activated by lignocellulosic biomass as additives. Particularly, commercially available Kraft lignin was found to be the best activator for the addition of cyanide to the in situ formed imines. A comparative study of the 31P-NMR (Nuclear Magnetic Resonance) along with IR (Infrared) data analysis for the Kraft lignin and methylated Kraft lignin samples ascertained the importance of the free hydroxyl groups in the activation of the mechanochemical reaction. The solvent-free mechanochemical Strecker reaction was then coupled with a lactamization process leading to the formation of the N-benzylphthalimide (5a) and the isoindolinone derivative 6a.
Title: Mechanochemical Lignin-Mediated Strecker Reaction
Description:
A mechanochemical Strecker reaction involving a wide range of aldehydes (aromatic, heteroaromatic and aliphatic), amines, and KCN afforded a library of α-aminonitriles upon mechanical activation.
This multicomponent process was efficiently activated by lignocellulosic biomass as additives.
Particularly, commercially available Kraft lignin was found to be the best activator for the addition of cyanide to the in situ formed imines.
A comparative study of the 31P-NMR (Nuclear Magnetic Resonance) along with IR (Infrared) data analysis for the Kraft lignin and methylated Kraft lignin samples ascertained the importance of the free hydroxyl groups in the activation of the mechanochemical reaction.
The solvent-free mechanochemical Strecker reaction was then coupled with a lactamization process leading to the formation of the N-benzylphthalimide (5a) and the isoindolinone derivative 6a.
Related Results
Cationic Lignin Polymers as Flocculant for Municipal Wastewater
Cationic Lignin Polymers as Flocculant for Municipal Wastewater
The radical polymerization of acid-washed and unwashed softwood kraft lignin with [2-(methacryloyloxy) ethyl] trimethylammonium chloride (METAC) was attempted to investigate the pr...
Isolation, characterization and semi-synthesis of natural products dimeric amide alkaloids
Isolation, characterization and semi-synthesis of natural products dimeric amide alkaloids
Isolation, characterization of natural products dimeric amide alkaloids from roots of the Piper chaba Hunter. The synthesis of these products using intermolecular [4+2] cycloaddit...
Fractionation and characterization of lignin from sugarcane bagasse using a sulfuric acid catalyzed solvothermal process
Fractionation and characterization of lignin from sugarcane bagasse using a sulfuric acid catalyzed solvothermal process
Abstract
Background: Conversion of lignocellulosic residue to bioenergy and biofuel is a promising platform for global sustainability. Fractionation is an initial step for ...
Effect of ozone treatment on softwood soda lignin-based water reducer performance for concrete
Effect of ozone treatment on softwood soda lignin-based water reducer performance for concrete
A lignin-based water reducer for concrete was prepared from softwood soda lignin. The soda lignin and the lignin-polyethylene glycol (PEG) derivative were modified with ozone to im...
Lignin as Feedstock for Nanoparticles Production
Lignin as Feedstock for Nanoparticles Production
Lignin is an interesting natural polymer with characteristics that contribute for the development and growth of plants. Lignin presents high variability associated with the diversi...
Technical Lignin Fractionation: A Powerful Tool for Lignin Structure Homogenization and Its Application
Technical Lignin Fractionation: A Powerful Tool for Lignin Structure Homogenization and Its Application
Extracted lignin as a by-product of pulping and bio-refining processes is the main available bio-phenolic polymer. The structural complexity, polydispersity, and black color of lig...
The Bacterial Degradation of Lignin—A Review
The Bacterial Degradation of Lignin—A Review
Microbial degradation of lignin, a natural complex biopolymer, a renewable raw material with a wide range of applications, has been mainly directed at fungal systems, nevertheless,...
Lignins inside and outside the cell wall: Inherent and modified thermoplasticity
Lignins inside and outside the cell wall: Inherent and modified thermoplasticity
Lignins are a group of irregular polyphenolic macromolecules found in vascular plants which, together with cellulose and hemicellulose, form highly robust materials. In the pulping...