Bio-based Amines Research Articles

PdPb-Catalyzed Decarboxylation of Proline to Pyrrolidine: Highly Selective Formation of a Biobased Amine in Water

Amino acids have huge potential as platform chemicals in the biobased industry. Pd-catalyzed decarboxylation is a very promising route for the valorization of these natural compounds derived from protein waste or fermentation. We report that the highly abundant and nonessential amino acid l-proline is very reactive in the Pd-catalyzed decarboxylation. Full conversions are obtained with Pd/C and different Pd/MeOx catalysts; this allowed the identification of the different side reactions and the mapping of the reaction network. Due to the high reactivity of pyrrolidine, the selectivity for pyrrolidine was initially low. By carefully modifying Pd/ZrO2 with Pb in a controlled manner—via two incipient wetness impregnation steps—the selectivity increased remarkably. Finally, a thorough investigation of the reaction parameters resulted in an increased activity of this modified catalyst and an even further enhanced selectivity under a low H2 pressure of 4 bar at 235 °C in water. This results in a very selective a...

Multifunctional β-amino alcohols as bio-based amine curing agents for the isocyanate- and phosgene-free synthesis of 100% bio-based polyhydroxyurethane thermosets

Novel 100% bio-based NIPU thermosets by employing bio-based epoxy resin feedstocks as raw material for cyclic carbonate monomers and amine curing agents.

Cover Picture: Eur. J. Lipid Sci. Technol. 2∕2015

European Journal of Lipid Science and TechnologyVolume 117, Issue 2 Cover PictureFree Access Cover Picture: Eur. J. Lipid Sci. Technol. 2∕2015 First published: 06 February 2015 https://doi.org/10.1002/ejlt.201570021AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Graphical Abstract Biobased aromatic polyamines were synthesized by thiol-ene coupling with cysteamine on cardanol, a non-edible by-product of cashew nutshell liquid. The cardanol-derived amines were used as hardeners in biobased epoxy networks. Mechanical and thermal properties of the obtained materials showed that these amines could lead to binders for composite applications. Indeed, this biobased amine reactant bears aromatic rings for interesting properties in formulations and has the advantage to use the unsaturations of the aliphatic chain which prevents the plasticization effect. Volume117, Issue2Special Issue: Fats and Oils as Renewable Feedstock for the Chemical IndustryFebruary 2015 RelatedInformation