A general approach to the synthesis of 14C-labeled photoactive acrylic acids

1991 ◽  
Vol 29 (9) ◽  
pp. 1019-1026 ◽  
Author(s):  
Taj Mohammad ◽  
Harry Morrison
Keyword(s):  
Acrylic Acids

THE TRANSMISSION OF POLAR EFFECTS: PART II. THE KINETICS OF ESTERIFICATION WITH DIAZODIPHENYLMETHANE AND THE IONIZATION OF 3-SUBSTITUTED ACRYLIC ACIDS

1965 ◽  
Vol 43 (12) ◽  
pp. 3354-3363 ◽  
Author(s):  
Keith Bowden
Keyword(s):  
Butyl Alcohol ◽  
Polar Effect ◽  
Rate Coefficients ◽  
Strengthening Effect ◽  
Benzoic Acids ◽  
Linear Free Energy ◽  
Substituted Benzoic Acids ◽  
Energy Relations ◽  
Acrylic Acids ◽  
Kinetics Of

The rate coefficients for the reaction with diazodiphenylmethane in ethanol, t-butyl alcohol, and ethyl acetate at 30° and the pKa values in water at 25° of fourteen 3-substituted acrylic acids have been determined. The effect of substitution is assessed by use of linear free energy relations. A definite incremental acid-strengthening effect solely due to cis-substitution is confirmed. This is not a "bulk" steric effect and is due solely to the orientation of substitution. The polar effect of a substituent is found to be approximately the same from the cis- or trans-position. An attempt is made to test the suggested mechanisms for the transmission of the polar effect. In the reactions studied the transmission of the polar effect in 3-substituted acrylic acid and ortho-substituted benzoic acids is approximately twice that of the meta- or para-substituted benzoic acids. This appears to be reasonably accommodated by a significant field effect.

scholarly journals Research into effect of propionic and acrylic acids on the electrodeposition of nickel

2017 ◽  
Vol 6 (6 (90)) ◽  
pp. 41-46
Author(s):  
Oksana Demchyshyna ◽  
Victor Vargalyuk ◽  
Volodymyr Polonskyy ◽  
Irina Sknar ◽  
Kateryna Plyasovskaya ◽  
...  
Keyword(s):  
Acrylic Acids ◽  
Electrodeposition Of Nickel

13C Nuclear Magnetic Resonance Studies. XVI. 13C Spectra of some Substituted Acrylic Acids and their Methyl Esters. A Correlation of Olefinic Shieldings in α,β-unsaturated Carbonyl Systems

1972 ◽  
Vol 50 (5) ◽  
pp. 601-611 ◽  
Author(s):  
H. Brouwer ◽  
J. B. Stothers
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Regression Analysis ◽  
Methyl Esters ◽  
Linear Regression Analysis ◽  
Magnetic Resonance Studies ◽  
Carbonyl Derivatives ◽  
Solvent Dependence ◽  
13C Nuclear Magnetic Resonance ◽  
Unsaturated Carboxylic Acids ◽  
Acrylic Acids

The carbon-13 n.m.r. spectra of 26 α,β-unsaturated methyl esters and 16 substituted acrylic acids have been determined and the 13C shieldings are discussed. These data are compared with the recently reported values for several α,β-unsaturated carboxylic acids. Linear regression analysis of the olefinic shielding data for several α,β-unsaturated carbonyl derivatives yields a set of parameters which correlate the results with reasonable precision. The solvent dependence of the 13C shieldings of acrylic acid and methyl acrylate has been examined briefly. The proton results for the methyl esters are discussed briefly.

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