Cyclophanes in which two cyclic conjugated n-systems face each other are ideal models for studying the interactions of two n-systems as a function of distance and intervening (~-skeleton. 1~ For this reason a simple access to these systems is desirable. We here report a one-pot synthesis of cyclopha
Synthesis and properties of superphanes with cyclopentadienone units
β Scribed by Rolf Roers; Frank Rominger; Christoph Braunweiler; Rolf Gleiter
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- French
- Weight
- 197 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
A metal supported [2+2+l]cycloaddition of two cyclic alkynes and one CO group is the key step for the preparation of the first superphanes (1, 2) with a metal-capped cyclopentadienone ring. Cyclic voltammetry reveals a strong interaction between the two ~systems in 2.
π SIMILAR VOLUMES
The 2-(1-methyl-4,5-dicyanoimidazolyl) group was attached to poly(diallylamine) and polyethylenimine, affording polymers containing an electron-withdrawing pendant group. The key to their preparation is high reactivity of 1-methyl-2-fluoro-4,5-dicyanoimidazole (1) toward nucleophilic aromatic substi