## Abstract Bei der Knoevenagel‐Kondensation von 2,6‐Dimethylthiazolo[4,5‐__f__] benzthiazol (**1**) mit Mono‐ und Dialdehyden der Benzol‐ und Thiophenreihe wurden einige Poly(thiazolo[4,5‐__f__]benzthiazol‐2,6‐ylenvinylenarylenvinylen)e (**7a–c**) und einige ihrer Oligomeren (**3a–e**) erhalten. D
Über polyarylenalkenylene und polyheteroarylenalkenylene, 8. Synthesen und charakterisierung von poly(imidazo[4.5-f]benzimidazol-2,6-diylvinylenarylenvinylen)en und einigen ihrer oligomeren
✍ Scribed by Manecke, Georg ;Brandt, Lothar ;Koßmehl, Gerhard
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1977
- Weight
- 820 KB
- Volume
- 178
- Category
- Article
- ISSN
- 0025-116X
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Some poly(imidazo[4.5‐f]benzimidazol‐2,6‐diylvinylenarylenevinylene)s (13aa–cc) were prepared via the Knoevenagel condensation starting from 2,6‐dimethylimidazo[4.5‐f]benzimidazole (4a) or its N^1^, N^7^ ‐dimethyl‐ and ‐diphenylderivatives (4b, c) and aromatic dialdehydes. Analogous reactions of 4a and 4c with monoaldehydes and of 2‐methylbenzimidazole with dialdehydes led to oligomer model compounds (6a–d, 8a–e, 9, 10a–d, 12) which were also prepared via another reaction type (Wittig reaction). The chemical structures were confirmed by elemental analysis, IR, and electronic spectra. The oligomers, in addition, were characterized by mass spectra and some were identified by independent synthesis. Electrical conductivities and thermical degradations of the polymers and of some of the oligomers were also investigated.
📜 SIMILAR VOLUMES
## Abstract From 2,3,5,6‐tetramethylthiazolo [4,5‐__f__]benzothiazoldiium diperchlorate (**2**) and dialdehydes of the benzene and the thiophene series the corresponding poly(3,5‐dimethylthiazolo[4,5‐__f__]benzothiazoldiium‐2,6‐diylvinylenarylenevinylene diperchlorate)s **6a–c** were synthesized vi
## Abstract Mit Hilfe der Wittig‐Reaktion des 2,7‐Fluorendicarbaldehyds (**1**) mit „Mono‐ und Bis‐Wittig‐Salzen”︁ der Benzol‐ und Thiophenreihe wurden einige Poly(2,7‐fluorenylenvinylenarylenvinylen)e (**3a–c**) sowie einige dazugehörige Oligomere hergestellt. Die Wittig‐Reaktion des 2‐Fluorencarb
## Abstract Bei der Knoevenagel‐Kondensation von 2,5‐Dimethyl‐1,3,4‐thiadiazol (**1**) mit Mono‐ und Dialdehyden der Benzol‐ und Thiophenreihe wurden einige Poly(1,3,4‐thiadiazol‐2,5‐ylenvinylenarylenvinylene) (**5a‐c**) und einige ihrer Oligomere (**3a‐e**) erhalten. Die Struktur der erhaltenen Su
## Abstract From Witting‐reactions of dithieno[3,2‐__b__: 2′, 3′‐__d__]thiophene‐2, 6‐dicarboxaldephyde (**1**) with “mono‐and bis‐Wittig‐salts” of the benzene and thiophene series poly(dithieno[3,2‐__b__: 2′,3′‐__d__]‐thiophene‐2,6‐diylvinylenearylenevinylene)s **3a—c** and some model compounds **
## Abstract From Wittig‐reactions of thieno[2,3‐__b__]thiophene‐2,5‐dicarboxaldehyde (__1__) and thieno‐[3,2‐__b__]thiophene‐2,5‐carboxaldehyde (**4**) with “mono‐and bis Wittig‐salts” of the benzene and thiophene series two series of isomeric poly(thienothiophene‐2,5‐diylvinylenearylenevinylene)s