✦ LIBER ✦
Spiro units as building blocks in thermotropic liquid crystals: Synthesis and physical properties of terminally substituted spiro[5.5]undecanes
✍ Scribed by Schmidt, Wolfgang ;Vögtle, Fritz ;Poetsch, Eike
- Book ID
- 102903125
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 972 KB
- Volume
- 1995
- Category
- Article
- ISSN
- 0947-3440
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
A number of terminally substituted spiranes were prepared from 9‐pentyl‐3‐spiro[5.5]undecanone (7), which was obtained in a five‐step synthesis starting from 4‐pentylcyclohexanone (1), using an intramolecular cyclisation with 4‐toluenesulfonylmethyl isocyanide (TosMIC) as a key step. By a comparison of the physical data of the new spiro[5.5]undecane derivatives I with those of several well‐known, analogous substituted compounds – solely differing in their central building unit – conclusions regarding the effects of the spiro ring system on its mesogenic potential are drawn.