A comparison of the solution radical propagation kinetics of partially water-miscible non-functional acrylates to acrylic acid

2020 ◽  
Vol 11 (44) ◽  
pp. 7104-7114
Author(s):  
Maryam Agboluaje ◽  
Ibrahim Refai ◽  
Henry H. Manston ◽  
Robin A. Hutchinson ◽  
Eva Dušička ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Acrylic Acid ◽  
Methyl Acrylate ◽  
Kinetics Of ◽  
Radical Propagation

The influence of hydrogen bonding on the kp of acrylic acid and methyl acrylate in alcohol and water is compared and contrasted.

The antioxidant methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate

2014 ◽  
Vol 70 (11) ◽  
pp. 1050-1053 ◽  
Author(s):  
Xiang Li ◽  
Zhi-Gang Wang ◽  
Hou-He Chen ◽  
Sheng-Gao Liu
Keyword(s):  
Hydrogen Bonding ◽  
Dimethyl Sulfoxide ◽  
Methyl Acrylate ◽  
Title Compound ◽  
Intermolecular Hydrogen Bonding ◽  
Tert Butyl ◽  
Ester Carbonyl ◽  
Compound C ◽  
Steric Crowding

The title compound, C18H28O3, was prepared by the reaction of 2,6-di-tert-butylphenol with methyl acrylate under basic conditions using dimethyl sulfoxide as the promoter. The structure of this antioxidant indicates significant strain between theortho tert-butyl substituents and the phenolic OH group. In spite of the steric crowding of the OH group, it participates in intermolecular hydrogen bonding with the ester carbonyl O atom.

Computational analysis of the effect of [Tea][Ms] and [Tea][H2PO4] ionic liquids on the structure and stability of Aβ(17–42) amyloid fibrils

2021 ◽  
Vol 23 (11) ◽  
pp. 6695-6709
Author(s):  
D. Gobbo ◽  
A. Cavalli ◽  
P. Ballone ◽  
A. Benedetto
Keyword(s):  
Ionic Liquid ◽  
Hydrogen Bonding ◽  
Ionic Liquids ◽  
Liquid Water ◽  
Computational Analysis ◽  
Amyloid Fibrils ◽  
Aβ Peptides ◽  
Structure And Stability ◽  
Water Solutions ◽  
Kinetics Of

Tight coordination of peptides by organic anions driven by hydrogen bonding affects the fibrillation kinetics of Aβ peptides in ionic liquid/water solutions.

scholarly journals Kinetics of radical telomerization of acrylic acid in the presence of 1-octadecanethiol

2018 ◽  
Vol 90 (11) ◽  
pp. 1743-1754 ◽  
Author(s):  
Yaroslav O. Mezhuev ◽  
Oksana Y. Sizova ◽  
Yuri V. Korshak ◽  
Anna L. Luss ◽  
Ivan V. Plyushchii ◽  
...  
Keyword(s):  
Critical Micelle Concentration ◽  
Acrylic Acid ◽  
Monomer Concentration ◽  
Atom Economy ◽  
Exponential Factor ◽  
H Nmr ◽  
Radical Telomerization ◽  
Kinetics Of ◽  
End Group ◽  
C Nmr

AbstractThe oligomer of acrylic acid with a thiooctadecyl end-group was obtained by using octadecyl mercaptan as the chain-transfer agent. The resulting oligomer was characterized by 1H NMR and 13C NMR spectroscopy and critical micelle concentration was determined in aqueous solution. The order with respect to the initiator concentration was 0.5 and 1.6 with respect to the monomer concentration. The abnormal reaction order with respect to the monomer concentration was explained by participation in the chain propagation of unassociated and associated forms of acrylic acid, which were stabilized by formation of hydrogen bonds. The kinetic parameters of telomerization were determined. Telomerization with acrylic acid in the non-associated form had lower activation energy and lower pre-exponential factor than in the case of associated forms. The synthesis of the acrylic acid oligomer with a thiooctadecyl end-group having a low critical micelle concentration in water was carried out in one stage and corresponds to the concept of atom economy.

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