Results 1 to 10 of about 82,854 (283)

Differential Pasting and Rheological Properties of Diverse Underutilized Starches Modified by Acetic Anhydride and Vinyl Acetate [PDF]

Foods
Underutilized starch sources are gaining increasing recognition. However, the inherent functional deficiencies of native starch have limited its application in food industry.
Song Xu, Bilatu Agza Gebre, Chuangchuang Zhang, Solomon Abate Mekonnen, Mengting Ma, Hui Zhang, Zhongquan Sui, Harold Corke   +7 more
doaj   +2 more sources

Nanocrystallite Zeolite BEA for Regioselective and Continuous Acetyl Functionalization of Anisole Using Acetic Anhydride: Catalyst Deactivation Studies. [PDF]

ACS Omega, 2023
Naresh G, Madhu Krushna B, Kondaiah K, Likhar PR, Satyavathi B, Srinivasu P.   +5 more
europepmc   +2 more sources

Parallel Palladium-Catalyzed Synthesis of Carboxylic Acids from Aryl Iodides, Bromides, and Vinyl Triflates Using Acetic Anhydride and Formate Anion as an External Condensed Source of Carbon Monoxide [PDF]

Molecules
Aryl iodides, bromides and vinyl-triflates are usually converted in high to excellent yields into the corresponding carboxylic acids through a parallel palladium-catalyzed hydroxycarbonylation using lithium formate and acetic anhydride as external ...
Antonia Iazzetti, Giancarlo Fabrizi, Yuri Gazzilli, Antonella Goggiamani, Federico Marrone, Chen Shen, Roberta Zoppoli   +6 more
doaj   +2 more sources

Microwave Mediated Acylation of Alcohols, Phenols and Thiophenols in Neat Acetic Anhydride. [PDF]

J Org Chem
Troftgruben MHS, Oldenburg I, Pama AM, Igawa B, Deguara S, Shields M, Viswanathan NK, Silverio JX, Gleason C, Wang JS, Ford JS, Lazaro H, Eagon S.   +12 more
europepmc   +2 more sources

The use of propionic anhydride in the sample preparation for pollen analysis

Nature Conservation Research: Заповедная наука, 2021
Acetolysis is an important stage in the sample treatment for pollen analysis. However, since 1998, acetic anhydride (CH3CO)2O, used for the acetolysis solution preparation, refers to precursors which turnover is limited in Russia and its use needs ...
Natalia G. Mazei, Elena Yu. Novenko
doaj   +1 more source

Effects of Physical and Mechanical Properties of Coir Fiber and Reinforced Epoxy Composites Treated with Acetic Anhydride and Alkali

Journal of Natural Fibers, 2023
Modified coir fiber improves compatibility between fiber and matrix. To explore a better fiber treatment approach and enhance the mechanical properties of composites, this study conducted alkali treatment and acetic anhydride treatment on long and short ...
Shaofeng Ru, Renyan Yang, Songmei Yang, Can Zhao   +3 more
doaj   +1 more source

Synthesis of Aliphatic Polyanhydrides with Controllable and Reproducible Molecular Weight

Pharmaceutics, 2022
Polyanhydrides have been synthesized for decades by melt-polycondensation of diacid monomers and 5 to >10 times mole excess acetic anhydride to diacid monomers to form polymers with a polydispersity ranging from 2.5 to 6 and low reproducibility ...
Radhakanta Ghosh, Yuvaraj Arun, Peter Siman, Abraham J. Domb   +3 more
doaj   +1 more source

Elaboration and Study of the Properties of a Polyester Composite Made of Oleaster Fibers Treated and Untreated

Journal of Natural Fibers, 2022
In this study, we have harvested natural oleaster (wild olive) fibers, processed and characterized in terms of physicochemical performance as well as mechanical properties.
K. Saidani, G. Racelma, K. Cheraitia, A. Lounis   +3 more
doaj   +1 more source

Improving delayed-release potential of winged bean starch by acetylation

Carbohydrate Polymer Technologies and Applications, 2021
Winged bean starch was acetylated for evaluation of its effects on the physicochemical and release properties of starch. The modification was carried out with 0.8, 1.6, and 2.4 g of acetic anhydride.
Avishikta Ray, Saptarshi Samajdar, K. Jayaram Kumar   +2 more
doaj   +1 more source

N-Methylimidazole Promotes The Reaction Of Homophthalic Anhydride With Imines [PDF]

, 2014
The addition of N-methylimidazole (NMI) to the reaction of homophthalic anhydride with imines such as pyridine-3-carboxaldehyde-N-trifluoroethylimine (9) reduces the amount of elimination byproduct and improves the yield of the formal cycloadduct ...
Aaron Levin, Bally T., Bogdanov M. G., David M. Floyd, Deng W., Flannery E. L., González-López M., Guibe-Jampel E., Guiguemde W. A., Haimova M. A., Höfle G., Jain R., Jian Liu, Kandinska M. I., Lenarcik B., Lindner C., Lutnæs O. B., Pattawong O., Paul R. Rablen, Scriven E. F. V., Spencer Knapp, Taydakov I. V., Thomas J. Emge, Vara Y., Yu N., Zheng Wang   +25 more
core   +6 more sources