Detailed 1D/2D NMR Analyses of Benzophenone-Related Reaction Products from a Photopolymerization System of Vinyl Acetate and Benzophenone
✍ Scribed by Lingbing Kong; Jianping Deng; Wantai Yang
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 242 KB
- Volume
- 207
- Category
- Article
- ISSN
- 1022-1352
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✦ Synopsis
Abstract
Summary: A new reaction system was designed in order to allow the reaction between benzophenone (BP) and poly(vinyl acetate) chain/radical or monomer to progress under UV irradiation with relatively constant intensity of absorbed light. After the reaction, most BP‐related products were successfully separated and were directly and particularly studied for the first time by a 600 MHz solution‐state NMR spectrometer. ^13^C, ^1^H, DEPT‐135, and 2D ^1^H‐^13^C HSQC, ^1^H‐^13^C HMBC NMR spectra were utilized for the analyses. In the mixed products, two new structures with new ether groups were detected and confirmed, besides detailed confirmation of benzopinacol and semi‐benzopinacol‐connected poly(vinyl acetate).
Structures 1 and 2
magnified imageStructures 1 and 2