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Novel 1,2,4-Triphosphole and 1,2,3-Triphosphetene Derivatives from N,N′-Bis(2,2-dimethylpropyl)benzimidazolin-2-ylidene and Phosphaalkynes

✍ Scribed by F. Ekkehardt Hahn; Lars Wittenbecher; Duc Le Van; Roland Fröhlich; Birgit Wibbeling


Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
151 KB
Volume
39
Category
Article
ISSN
0044-8249

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✍ Hamid Yeganeh; Mehdi Barikani 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 114 KB 👁 2 views

Two diisocyanate monomers containing methylene groups and built-in imide structure have been prepared from the parent diacids via the Curtius±Weinstock rearrangement. Polyimides have been synthesized by solution polymerization of these isocyanates with pyromellitic dianhydride (PMDA), 3,3',4,4'-benz