✦ LIBER ✦
Investigation of polyimides containing naphthalene units. IV. Mechanism of naphthalisoimides formation and their isomerization to naphthalimides
✍ Scribed by Danuta Sęk; Andrzej Wanic; Henryk Janeczek; Marc J. M. Abadie
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 178 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0887-624X
No coin nor oath required. For personal study only.
✦ Synopsis
During high-temperature condensation of six-membered naphthalene anhydrides with aromatic primary amines, at first, naphthalisoimides were formed, having cis or trans structures in dependence on absence or presence of acidic catalysts. Only the trans naphthalisoimides isomerized to the naphthalimides in the presence of basic catalysts during heating or UV irradiation. The mechanism of naphthalisoimides formation and their rearrangement to naphthalimides has been proposed.