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Synthesis of new bis(2,4-dimethyl-5-amino-benzo[b][1,8]-naphthyridines) and bis(benzo[b][1,8]naphthyridones) linked with methylene linear chain
✍ Scribed by Cerasella Afloroaei; Nicu Dulamita; Mircea Vlassa; Jacques Barbe; Pierre Brouant
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 2000
- Tongue
- English
- Weight
- 222 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0022-152X
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✦ Synopsis
Abstract
The preparation of novel alkyl monobridged 2,4‐dimethyl‐5‐amino‐benzo[b][1,8]naphthyiridine and benzo[b][1,8]naphthyridone derivatives by phase transfer catalysis is reported.
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## Abstract Two new donor/acceptor copolymers PBDTPhBT1 and PBDTPhBT2 with alternating benzodithiophene (BDT) and bisthiophene‐phthalimide (PhBT) units were synthesized by Stille coupling reaction. The copolymers showed identical optical bandgaps of 1.98 eV. The HOMO energy levels are −5.35 and −5.
## Abstract Novel polysubstituted 1,5‐benzodiazepine **5**, 2,2‐bis(methylthio)benzoxazoles **8a–d**, 2,2‐bis‐ (acetyl)benzoxazole **8e**, 2‐(3‐methyl‐1‐phenylpyrazolo‐ 4‐yl)benzoazole derivatives **16a–c**, as well as the previously reported 2‐di[cyano(acetyl)‐methylene]benzothiazoles **7a,b** hav