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Synthesis 1999; 1999(1): 117-120
DOI: 10.1055/s-1999-3689
DOI: 10.1055/s-1999-3689
paper
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Synthesis of Rodlike Dispiro Hydrocarbon Skeletons for New Liquid Crystal Compounds
Further Information
Publication History
Publication Date:
31 December 1999 (online)
![](https://www.thieme-connect.de/media/synthesis/199901/lookinside/thumbnails/10.1055-s-1999-3689-1.jpg)
A simple synthesis of the dispiro[5.2.5.2]hexadecane skeleton was developed. Starting from the cyclohexanedicarbaldehyde 6 the dispirane was prepared in one step. The synthesised dispirodiketone 4 is a key compound for the preparation of a number of new liquid crystalline compounds, as its linear molecular shape is proved by an x-ray structural analysis of the corresponding diketal 10. Additionally the synthesis of the first dispirane 4 with a [5.2.3.2]-linkage is described.
Cyclobutane - Cyclohexane - Ketals - Liquid crystals - Spiro compounds