A novel spiro adduct from intramolecular ipso substitution in the photolysis of an α-[p-(2-hydroxyalkoxy)phenyl]vinyl bromide

Abstract

A 1,4-dioxaspiro[4.5]deca-6,9-diene was obtained in high yield by photolysis of 1-bromo-1-[p-(2-hydroxy-2-methylpropoxy)phenyl]-2,2-diphenylethene in the presence of sodium 2-propoxide.