Synthesis and characterization of isocyanic acid,m-phenylenediiso-propylidene based poly(urethane-urea) dispersions containing different amount of 2,2-Bis(hydroxyl methyl)propionic acid

2006 ◽  
Vol 102 (6) ◽  
pp. 5737-5746 ◽  
Author(s):  
Hsien-Tang Chiu ◽  
Yi-Chin Huang ◽  
Hsiu-Yeh Hu
Keyword(s):  
Propionic Acid ◽  
Isocyanic Acid ◽  
Synthesis And Characterization

Synthesis and characterization of 2,2-bis(methylol)propionic acid dendrimers with different cores and terminal groups

2004 ◽  
Vol 42 (7) ◽  
pp. 1758-1767 ◽  
Author(s):  
Michael Malkoch ◽  
Hans Claesson ◽  
Peter Löwenhielm ◽  
Eva Malmström ◽  
Anders Hult
Keyword(s):  
Propionic Acid ◽  
Synthesis And Characterization

Synthesis and Characterization of Chiral Conducting Polymers Based on Polypyrrole

1997 ◽  
Vol 50 (9) ◽  
pp. 939 ◽  
Author(s):  
Fang Chen ◽  
Parveen Akhtar ◽  
Leon A. P. Kane-Maguire ◽  
Gordon G. Wallace
Keyword(s):  
Conducting Polymers ◽  
Propionic Acid ◽  
Spectroscopic Properties ◽  
Optically Active ◽  
Synthesis And Characterization ◽  
Chiroptical Properties ◽  
Covalently Bonded ◽  
Circular Dichroïsm ◽  
Ring Position

A range of optically active pyrrole monomers have been synthesized in which a chiral sub- stituent is covalently bonded either to the pyrrole N or C3 ring position, namely (–)-(1R)-4-methyl-N-(1-phenylethyl)pyrrole-3-carboxamide, (+)-(1S)-4-methyl-N-(1-phenylethyl)pyrrole-3-carboxamide, (–)-(1R)-4-methyl-N-(1-naphthylethyl)pyrrole-3-carboxamide, (+)-(1S)-4-methyl-N-(1-naphthylethyl)pyrrole-3-carboxamide, (+)-(2S)-2-(1H-pyrrol-1-yl)propionic acid, (+)-(1S)-N-(1-phenyl-ethyl)pyrrole, and (–)-(1R)-N-(1-phenylethyl)pyrrole. Their chiroptical properties have been established by circular dichroism spectroscopy. Electropolymerization of the three N-substituted pyrrole monomers provided films of chiral conducting polymers, whose electrical and spectroscopic properties are described. Although oxidation of the C3 substituted pyrrole monomers was also facile, electrodeposition was poor and films of the associated polymers could not be obtained.

Synthesis and Characterization of 3-(5-Substituted-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-Propionic Acid Ethyl Esters

2013 ◽  
Vol 19 (4) ◽  
pp. 1226-1228
Author(s):  
Guoku Chao ◽  
Lianping Shao ◽  
Shuai Yao ◽  
Liming Hong ◽  
Dashuai Li ◽  
...  
Keyword(s):  
Propionic Acid ◽  
Ethyl Esters ◽  
Synthesis And Characterization
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