Thermally stable polymers based on 1,3,4-oxadiazole rings
✍ Scribed by Yagoub Mansoori; Raana Sarvari; Mohammad Reza Zamanloo; Gholam Hassan Imanzadeh
- Publisher
- Institute of Chemistry Chinese Academy of Sciences
- Year
- 2009
- Tongue
- English
- Weight
- 501 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0256-7679
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Developments i n t h e synthesis of t h e m l l y s t a b l e polymers have been discussed, a t t e n t i o n being paid t o t h e synthesis of some novel polymers with naphthalene and binaphthalene recurring units. Unconventional organic raw material, i.e. coal t a r , has been recognized a s s u i
## Abstract The ring‐photoisomerization of 3‐amino‐ and 3‐methylamino‐5‐phenyl‐1,2,4‐oxadiazoles into the corresponding 2‐amino‐ and 2‐methylamino‐5‐phenyl‐1,3,4‐oxadiazoles has been reinvestigated by examining the effect of a base on the photoreaction. On irradiating at λ = 254 nm in methanol, yie