Conformational equilibria in carboxylic acid bimolecules: a rotational study of acrylic acid–formic acid

2013 ◽  
Vol 15 (8) ◽  
pp. 2917 ◽  
Author(s):  
Gang Feng ◽  
Qian Gou ◽  
Luca Evangelisti ◽  
Zhining Xia ◽  
Walther Caminati
Keyword(s):  
Carboxylic Acid ◽  
Acrylic Acid ◽  
Formic Acid ◽  
Conformational Equilibria

Nexafs Studies of Unsaturated Carboxylic Acids and Alcohols Adsorbed on the Si(111)(7×7) Surface

1986 ◽  
Vol 77 ◽  
Author(s):  
D. A. Outka ◽  
J. Stöhr ◽  
R. J. Madix ◽  
H. H. Rotermund ◽  
B. Hermsmeier ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Carboxylic Acid ◽  
Acrylic Acid ◽  
Formic Acid ◽  
Silicon Substrate ◽  
Silicon Surface ◽  
Alcohol Group ◽  
Triple Bonds ◽  
Unsaturated Carboxylic Acids ◽  
Propiolic Acid

ABSTRACTThe adsorption of formic acid (HCOOH), acrylic acid (CH2= CHCO2H), propiolic acid (HC=CCO2H), and the corresponding alcohols on the Si(111)(7×7) surface have been investigated by NEXAFS. In each case, well-defined dipole transitions to σ* and π* molecular orbital s were observed above the C and 0 K-edges and used to probe the orientation and chemistry of these molecules on this silicon surface. Monolayer coverages of these molecules on silicon, bond strongly to the silicon surface via the carboxylic acid or alcohol group. In contrast, the C-C double and triple bonds of these molecules do not react initially with the silicon surface. Upon heating, however, the C-C double and triple bonds which are held in proximity to the surface by the carboxylic acid or alcohol group, are lost either by polymerization on the surface or reaction with the silicon substrate. These results illustrate the capabilities of NEXAFS to investigate molecular orientations on surfaces and the electronic structure of polyatomic adsorbates.

scholarly journals Regioselective Base-induced Condensations of Acrylic Acid Derivatives

1999 ◽  
Vol 23 (3) ◽  
pp. 174-175
Author(s):  
E. Abdel-Ghani
Keyword(s):  
Carboxylic Acid ◽  
Acrylic Acid ◽  
Dicarboxylic Acid ◽  
Ethyl Acetoacetate ◽  
Tobacco Necrosis Virus ◽  
Necrosis Virus ◽  
Antiviral Activities

The orientation of cyclization of the reaction of methyl aroylacrylate (1) and aroylacrylic acid (8) with ethyl acetoacetate and/or thiourea leading to the formation of 4-aroylmethylcyclopentane-1,3-dione (2) 5-aryl-3-oxocyclohexene-1,2-dicarboxylic acid (9), 2-imino-5-aroylmethylthiazolidin-4-one (11) and 6-aryl-2-sulfonylpyrimidine-4-carboxylic acid (14) depends on the medium employed; some compounds show moderate antiviral activities against tobacco necrosis virus.

scholarly journals CC-stretched formic acid: isomerisation, dimerisation, and carboxylic acid complexation

2021 ◽  
Author(s):  
Katharina A. E. Meyer ◽  
Arman Nejad
Keyword(s):  
Carboxylic Acid ◽  
Formic Acid ◽  
Vibrational Band ◽  
Propiolic Acid

The cis–trans-isomerism of the propiolic acid monomer (HCC–COOH) is examined with linear Raman jet spectroscopy, yielding the first environment-free vibrational band centres of a higher-energy cis-rotamer beyond formic acid (HCOOH) in addition to all fundamentals and a large number of hot and combination/overtone bands of the trans-conformer.

α-CYANO-β-ARYLACRYLIC ACIDS

1945 ◽  
Vol 23b (2) ◽  
pp. 84-87 ◽  
Author(s):  
C. Y. Hopkins ◽  
Mary Chisholm ◽  
Ruth Michael
Keyword(s):  
Carboxylic Acid ◽  
Acrylic Acid

α-Cyano-β-arylacrylic acids have been prepared by condensing the following aldehydes with sodium cyanoacetate: 1-naphthaldehyde, 2,3-dimethoxybenzaldehyde, 3,4-diethoxybenzaldehyde, 6-chloropiperonal, 4-isopropylbenzaldehyde, 2-acetoxy-3-methoxybenzaldehyde, 2-hydroxy-3-methoxybenzaldehyde. The last-named gave α-cyano-β (2-hydroxy-3-methoxyphenyl) acrylic acid, which was readily converted to 8-methoxycoumarin-3-carboxylic acid.

Phase study of nylon 6/poly (acrylic acid) blends cast from solutions in aqueous formic acid

1993 ◽  
Vol 31 (1) ◽  
pp. 15-23 ◽  
Author(s):  
Yoshiyuki Nishio ◽  
Hidematsu Suzuki ◽  
Kazue Morisaki
Keyword(s):  
Acrylic Acid ◽  
Formic Acid ◽  
Nylon 6 ◽  
Phase Study ◽  
Aqueous Formic Acid ◽  
Poly Acrylic Acid
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