title: Acids direct 2-styrylcyclobutanone into two distinctly different reaction pathways.
abstract: Two structurally distinct carbocycles were selectively obtained by the reactions of 2-(o-styryl)cyclobutanones promoted by ytterbium salts. Treatment of the cyclobutanones with YbCl(3) in 1,4-dioxane at 100 degrees C afforded 2-(2-chloroethyl)naphthalenes. On the other hand, the reaction with Yb(OTf)(3) in chlorobenzene at 130 degrees C gave 9,10-dihydrobenzocycloocten-7(8H)-ones.
authors.affiliation: Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Japan. murakami@sbchem.kyoto-u.ac.jp
authors.forename: Masahiro
authors.initials: M
authors.lastname: Murakami
authors.forename: Sho
authors.initials: S
authors.lastname: Kadowaki
authors.forename: Atsushi
authors.initials: A
authors.lastname: Fujimoto
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Ishibashi
authors.forename: Takanori
authors.initials: T
authors.lastname: Matsuda