As a continuation of the study of the dehydration of alcohols by means of dilute aqueous solutions of acids or acid-acting salts, l-* 2-rnethyl-2, 4-pentanediol and 4-methyl-x-penten-2- ol were submitted to the action of dilute aqueous ferric chloride and magnesium chloride'solutions. The reactions were carried out under pressure and at temperatures of 145-250'. It was found that the reaction was more complex than in the case of aliphatic or ...
