Halogenated, unsaturated alcohols are dehydrated by contacting the alcohol and a carrier gas with a silica alumina catalyst to form dienes of the formula: ##STR1## wherein each X is independently hydrogen, fluorine chlorine, or bromine with the proviso that no more than one of them is hydrogen, and each R is independently hydrogen, alkyl, aralkyl, alkaryl, or aryl.
卤代不饱和醇通过与氧化
硅铝催化剂接触,与载气一起脱
水,形成式为:##STR1##其中每个X独立地为氢、
氟、
氯或
溴,但不能超过一个为氢,每个R独立地为氢、烷基、芳基烷基、烷基芳基或芳基。