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2-Amino-4,4-disubstituted-5-carboxymethyl-Δ2-1,3,4-oxadiazolin-4-ium chlorides and their recyclization in acetic anhydride

✍ Scribed by V. Ya. Kauss; I. Ya. Kalvin'sh


Publisher
Springer US
Year
1992
Tongue
English
Weight
299 KB
Volume
28
Category
Article
ISSN
0009-3122

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Synthesis of polyamide-quinazolinediones
✍ Chau, Nguyen ;Saegusa, Yasuo ;Iwakura, Yoshio 📂 Article 📅 1982 🏛 John Wiley and Sons ⚖ 491 KB

## Abstract A novel class of polyamide‐quinazolinediones was synthesized by the polymerization of 2,2′‐disubstituted bis(1,3,4‐oxadiazolin‐5‐ones) with aromatic bis‐__o__‐amino esters in __m__‐cresol. The polymerization probably proceeded in the formation of ring‐opening adducts, which in turn were