1,1,4,4,7,7-Hexamethylcyclononane: synthesis and crystal structure
- 1 January 1993
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 2
- No. 4,p. 633-634
- https://doi.org/10.1039/p29930000633
Abstract
1,1,4,4,7,7-Hexamethylcyclononane (2) has been synthesised by PtO2-catalysed hydrogenation of tris-trans-homobenzene (1) at room temperature, 2 is a crystalline compound with m.p. 85 °C whose structure has been determined by a crystal structure analysis. This reveals a twisted boat–chair conformation (TBC) of approximate D3 symmetry for 2 with the gem-dimethyl groups bonded to carbon atoms lying on one of the three C2 axes of that form. The same conformation for 2 is also found in solution at room temperature by inspection of its 1H and 13C NMR spectra.Keywords
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