Results 11 to 20 of about 46,587 (96)

Modification of chiral dimethyl tartrate through transesterification : immobilisation on POSS and enantioselectivity reversion in Sharpless asymmetric epoxidation [PDF]

, 2010
Modification of dimethyl tartrate has been investigated through transesterification with aminoalcohols to provide reactive functionalities for the covalent bonding of chiral tartrate to polyhedral oligomeric silsesquioxanes.
Van Grieken, Rafael, Sherrington, David C., Gibson, Colin L., Iglesias, José, García, Rafael A.   +4 more
core   +4 more sources

Lignin Functionalization Strategies and the Potential Applications of Its Derivatives – A Review

BioResources, 2021
Lignin is one of the most important and widespread carbon sources on Earth. Significant amounts of lignin are delivered to the market by pulp mills and biorefineries, and there have been many efforts to develop routes for its valorization. Over the years,
Maria Juliane Suota, Débora Merediane Kochepka, Marlon Gualberto Ganter Moura, Cleverton Luiz Pirich, Mailson Matos, Washington Luiz Esteves Magalhães, Luiz Pereira Ramos   +6 more
doaj   +1 more source

Epoxidized isosorbide-based esters with long alkyl chains as efficient and enhanced thermal stability and migration resistance PVC plasticizers

Polymer Testing, 2023
The development of a bio-based plasticizer with good plasticizing performance, migration resistance, and thermal stability for polyvinyl chloride (PVC) is still a notable challenge due to the trade-off between molecular weight and compatibility.
Yu Han, Caili Zhang, Yang Yang, Yunxuan Weng, Piming Ma, Pengwu Xu   +5 more
doaj   +1 more source

Ion-exchange Resin Catalyzed Esterification of Lactic Acid with Isopropanol: a Kinetic Study [PDF]

, 2011
The kinetic behavior of esterification of lactic acid with isopropanol over an acidic cation exchange resin, Amberlyst 15, was studied under isothermal condition. Isopropyl lactate synthesized in this reaction is an important pharmaceutical intermediate.
Wanchoo , Ravinder Kumar, Thakur, Sakshi, Sharma, Mamta, Toor, Amrit Pal   +3 more
core   +2 more sources

A novel class of bio-lubricants are synthesized by epoxidation of 10-undecylenic acid-based esters

Grasas y Aceites, 2022
Mineral-based lubricants are being supplanted by bio-based lubricants because of environmental concerns and the depletion of fossil resources. The derivatives of edible and non-edible oils are considered potential alternatives to existing natural ...
B. Lakkoju, V. Vemulapalli
doaj   +1 more source

Thermo-Oxidative Stability and Tribological Properties of Biolubricants Obtained from Castor Oil Fatty Acids and Isoamyl Alcohol

Lubricants, 2023
In this study, the thermo-oxidative stability and tribological behavior of bio-based lubricant samples synthesized from castor oil using isoamyl alcohol were evaluated.
Maria Marliete F. Melo Neta, Gustavo R. R. Lima, Philipe de O. Tavares, Igor de M. Figueredo, Weslley da S. Rocha, Paulo R. C. F. Ribeiro Filho, Célio L. Cavalcante, Francisco Murilo T. Luna   +7 more
doaj   +1 more source

Kinetic Study of Esterification of Acetic Acid with n-butanol and isobutanol Catalyzed by Ion Exchange Resin [PDF]

, 2011
Esters are an important pharmaceutical intermediates and very useful perfumery agents. In this study the esterification of acetic acid with n-butanol and iso-butanol over an acidic cation exchange resin, Amberlyst 15 were carried out.
Wanchoo , Ravinder Kumar, Ghansyam Kumar, R. K. Wanchoo, Mamta Sharma, Pal Toor, Amrit, Kumar, Ghanshyam, Sharma, Mamta, Amrit Pal Toor   +7 more
core   +2 more sources

Synthesis and Identification of Epoxy Derivatives of 5-Methylhexahydroisoindole-1,3-dione and Biological Evaluation

Molecules, 2021
Cyclic imides belong to a well-known class of organic compounds with various biological activities, promoting a great interest in compounds with this functional group.
Kariny B. A. Torrent, Elson S. Alvarenga
doaj   +1 more source

Thermal Behavior and Fluidity of Biolubricant Synthesized from Mango (Mangifera indica L.) Kernel Oil Blended With Cold Flow Property Improvers

Journal of Applied Sciences and Environmental Management, 2023
Fossil fuel and conventional lubricant are not environmentally friendly, non-biodegradable, toxic, and non-renewable. Therefore, the objective of this paper is to evaluate the thermal and fluidity of the biolubricant synthesized from Mango (Mangifera ...
Y. Jethro, S. E. Omada, M. Usman
doaj   +1 more source

Direct Regioselective Esterification at O-2 of β-Cyclodextrin and Hydrolysis by Neighboring-group Participation

E-Journal of Chemistry, 2012
A simple and efficient strategy for direct regioselective esterification at O-2 of β-cyclodextrin was developed by using the combination of N,N'-carbonyldiimidazole and carbonate buffer in 1,4-dioxane, which does not require large amounts of polar ...
Zhi-Zhong Wang, Xuan-Ping Ma, Xiao-Gang Wei   +2 more
doaj   +1 more source