Acid-induced Ring-opening of 2'-Substituted Spiro-10-ones

Article abstract of DOI:10.1246/bcsj.54.3869

The title compounds (1) reacted under acidic conditions to give cyclopropane ring-opened products.In these reactions of 1 bearing methyl-, phenyl-, chloro-, bromo-, and acetoxy-substituents, the cyclopropane ring opened from the more substituted side.