Synthesis of Monodisperse Oligo(para-phenyleneethynylene)s Using Orthogonal Protecting Groups with Different Polarity for Terminal Acetylene Units
✍ Scribed by Hildegard Kukula; Stephan Veit; Adelheid Godt
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 264 KB
- Volume
- 1999
- Category
- Article
- ISSN
- 1434-193X
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✦ Synopsis
Monodisperse oligo(para-phenyleneethynylene)s (oligo-protective groups for the acetylene moieties. The polar HOM group shows a strong impact on the chromatographic PPEs) were synthesized by a divergent-convergent synthesis starting behaviour of the products and makes the isolation of pure compounds very easy. The synthesis was pursued up to the (triisopropylsilyl)ethynyl]benzene and using the Pd/Cucatalyzed alkyne-aryl coupling. The groups hydroxymethyl nonamer. The oligoPPEs were fully characterised, including absorption and emission spectral data. (HOM) and triisopropylsilyl (TIPS) function as orthogonal Therefore, we designed an alternative approach using or- [a] Max-Planck-Institut für Polymerforschung, pound with alkali metal hydroxide [8a,8b] or sodium hy-