Zwitterion mediated cocyclo-oligomerization of small ring ethers. Cycloadditions to a spiroanellated bicyclopropyl unit
- 1 January 1983
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 14,p. 771-772
- https://doi.org/10.1039/c39830000771
Abstract
The diene (1) reacts with tetracyanoethylene in the presence of oxirane or oxetane to yield the macrocyclic 1:1:2 cocycloadducts (7) and (8) respectively; only small amounts of the normal [4 + 2] cyloadduct (2) are formed in any solvent, whereas the abnormal benzocyclo-octene derivative (3) is obtained in 1,4-dioxane almost exclusively.Keywords
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