Cationic cyclocodimerization. 3. Syntheses of [3.3] paracyclo (1, 4) naphthalenophane and [3.3](1, 4) naphthalenophane derivatives. Stereoselectivity governed by the …
The cationic cyclocodimerization of l-(4-vinylnaphthyl)-3-(p-vinylphenyl) propane and 1, 3- bis (4-vinylnaphthy1) propane with 2-phenylpropene, indene, 1, l-diphenylethylene, and styrene gave [3.3] paracyclo (1, 4)-naphthalenophanes and [3.3](1, 4) naphthalenophanes, respectively, in 11.5-53.6% yields. From the structures of carbophanes produced, it is concluded that the stereoselectivity shown in the cationic cyclocodimerization can, be ...