Synthesis and modification of aromatic polyesters with chloroacetyl 3,5-dibromo-p-hydroxybenzoic acid

2009 ◽  
Vol 111 (4) ◽  
pp. 1755-1762 ◽  
Author(s):  
Sedat Ozden ◽  
A. M. Charayev ◽  
R. C. Bazheva
Keyword(s):  
Hydroxybenzoic Acid ◽  
Aromatic Polyesters

The Catalytic Synthesis of Wholly Aromatic Polyesters Based on 4-hydroxybenzoic Acid via Direct Esterification

2020 ◽  
Vol 869 ◽  
pp. 112-118
Author(s):  
Timur R. Deberdeev ◽  
Alsu I. Akhmetshina ◽  
Liana K. Karimova
Keyword(s):  
Phase Transition ◽  
Molecular Weight ◽  
High Performance ◽  
Crystalline State ◽  
Average Molecular Weight ◽  
Practical Importance ◽  
Catalytic Synthesis ◽  
Hydroxybenzoic Acid ◽  
Direct Esterification ◽  
Aromatic Polyesters

The synthesis and properties of wholly aromatic polyesters are of considerable practical importance to create functional and high-performance materials. In the present study, by means of catalytic polyesterification using titanium (IV) butoxide, we’ve synthesized wholly aromatic oligomers derived from 4-hydroxybenzoic acid (HBA), aromatic diacids and dibasic phenols. As revealed by FTIR measurements, the average molecular weight of oligomers has varied from 500 to 1400. The results of DSC have shown endotherm peaks attributed to a phase transition of low-molecular oligomers from crystalline state to mesophase and further isotropization. The synthesized oligomers were resistant to high temperatures up to about 300-320 °C.

Conformations and rotational barriers of aromatic polyesters. 3. AM1-based parametrization of a force field for poly(p-hydroxybenzoic acid) and for poly(6-hydroxy-2-naphthoic acid)

1993 ◽  
Vol 26 (7) ◽  
pp. 1555-1563 ◽  
Author(s):  
Jippe Van Ruiten ◽  
Robert J. Meier ◽  
Christoph Hahn ◽  
Thomas Mosell ◽  
Alla Sariban ◽  
...  
Keyword(s):  
Force Field ◽  
Hydroxybenzoic Acid ◽  
Rotational Barriers ◽  
Naphthoic Acid ◽  
Aromatic Polyesters

Biotransformation of 4-hydroxybenzoic acid in the rhizosphere of grapevine (Vitis vinifera L.)

2017 ◽  
Vol 40 (1) ◽  
pp. 95-102 ◽  
Author(s):  
B. Wang ◽  
T. Zhou1 ◽  
K. Li ◽  
X.W. Guo ◽  
Y.S. Guo ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Vitis Vinifera L ◽  
Hydroxybenzoic Acid

Synthesis and Evaluation of Aromatic Surfactants as Potential Antibacterial and Cytotoxic Agents

2019 ◽  
Vol 16 (6) ◽  
pp. 478-484
Author(s):  
Kenia Barrantes ◽  
Mary Fuentes ◽  
Luz Chacón ◽  
Rosario Achí ◽  
Jorge Granados-Zuñiga ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Hela Cells ◽  
Cytotoxic Agents ◽  
Cytotoxic Activities ◽  
Hydroxybenzoic Acid ◽  
Derivatives Of

Two ether and one ester derivatives of the 4-nitro-3-hydroxybenzoic acid were synthesized and characterized. The in vitro antimicrobial and cytotoxic activities of the three novel compounds were also evaluated. The aromatic derivatives showed antibacterial activity against one of the four microorganisms tested and two compounds (C8 and NOBA) had a lower IC50 in HeLa cells.

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