A study on the structural analysis of the sulfoxide polymers from the precursor polymer having a 3-methylthiopropionyl group

✍ Scribed by Tamotsu Yamamoto; Yoshiyuki Nakamura; Masahiro Nishiguchi; Kouhei Mori

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 627 KB
• Volume: 27
• Category: Article
• ISSN: 1381-5148
• DOI: 10.1016/1381-5148(95)00028-e

✦ Synopsis

For the structural analysis of the polymer having a 3-methylsulfinylpropionyl group (PVAcSOMe) obtained from the precursor sulfide polymer, NMR ('H and 13C) behaviors of its model compounds, methyl 3-methylthiopropionate (l), methyl 3-methylsulfinylpropionate

(2) and methyl 3-methylsulfonylpropionate (3) were examined. In 'H-NMR spectra of the 3 compounds, the overlaps of the peaks were observed between protons underlined in CH$SO CH2CH2, CHSCH2 CH2, and CH3S02CH2CH2, while in their r3C-NMR spectra, the overlap of chemical shifts of all carbons was not observed. From the relation between pulse delay and peak-area ratios the quantitativeness of "C-NMR was checked. The structural analysis of the sulfoxide polymers was found indirectly by means of 'H-NMR spectroscopy (the mathematical treatment of peak areas) and directly by means of 13C-NMR spectroscopy.