Modification of chemical reactivity by cyclodextrins. Observation of

Sharat Singh, Govindarajan Usha, Chen Ho Tung, Nicholas J. Turro, and Vaidhyanathan Ramamurthy. J. Org. Chem. , 1986, 51 (6), pp 941–944. DOI: 10.10...
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J . Org. Chem. 1986,51, 941-944 epoxides are not useful in this reaction because decomposition of the vinyllithium species via elimination is faster than the desired nucleophilic substitution. Reaction of the acyclic dimethylketene dithioacetal analogous to 2 under the same conditions gave