Vinyl compounds in the diene synthesis communication 1. Reactions of some vinyl ethers with cyclopentadiene and with hexachlorocyclopentadiene

1. A study was made of the diene condensation of phenyl vinyl, butyl vinyl, and cyclohexyl vinyl ethers with cyclopentadiene. 2. It was shown that this reaction proceeds stepwise and that the second stage can be carried out with other dienes. 3. It was shown that exachlorocyclopentadiene can be condensed with vinyl ethers and with the adducts formed by vinyl others with cyclopentadiene. 4. Ton compounds of the bicyclo[2,2,1]hept-2-ene and octahydro-1,4,5,8-dimethanonaphthalene series containing four and five five-membered rings in their molecules were isolate and characterized. Eight of the compounds prepared have not boon described previously in the literature.