1, 4-Dioxane was dehydrated by refluxing with sodium metal for two hours, allowing to remain in contact with anhydrous magnesium sulfate for twenty-four hours, and distilling. Dioxane thus purified gave no color reaction with anhydrous copper sulfate. The anhydrous halides were commercial preparations. Two procedures for the preparation of the compounds were employed. If the halide is appreciably soluble in dioxane at room ...
