Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Cyclododecanone (3b) was converted to [11.11]betweenanene (1b) in three steps via 1-cyclododecylcyclododecene (11b) and -bicyclo[11.11.0]tetracos-1(13)-ene (2b). The key betweenanene precursor 2b is also accessible by acid-catalyzed dehydration of the related C 24 spirocyclic alcohol (7b).
![spiro[11.12]tetracosan-24-one Structure](https://image.chemsrc.com/caspic/385/76713-43-4.png)
![spiro[11.12]tetracosan-24-ol Structure](https://image.chemsrc.com/caspic/347/76713-44-5.png)
![cis-bicyclo[11.11.0]tetracos-1(13)-ene Structure](https://image.chemsrc.com/caspic/292/76713-50-3.png)
![1,2,3,4,5,6,7,8,9,10,11,11a,12,13,14,15,16,17,18,19,20,21-docosahydrocyclotrideca[13]annulene Structure](https://image.chemsrc.com/caspic/213/343832-49-5.png)
![(Z)-spiro[12.11]tetracos-13-ene Structure](https://image.chemsrc.com/caspic/037/76725-34-3.png)