SOLVOLYTIC ELIMINATION AND HYDROLYSIS PROMOTED BY AN AROMATIC HYDROXY GROUP. PART 1. THE REACTION OF 2,6-DIBROMO-4-DIBROMOMETHYLPHENOL AND OF 2,6-DIBROMO-4-BROMOMETHYLENECYCLOHEXA-2,5-DIENONE WITH WATER IN 95% 1,4-DIOXANE