The invention relates to a process for preparing a halogenated precursor of an alkenone, which comprises reacting a carboxylic acid halide with a vinyl ether in a liquid reaction medium comprising an alkenone or a halogenated precursor of the alkenone, and also relates to a process for preparing an alkenone, which comprises (a) reacting a carboxylic acid halide with a vinyl ether by introducing vinyl ether into a liquid reaction medium containing carboxylic acid halide to form a halogenated precursor of the alkenone and (b) eliminating hydrogen halide from said precursor to form the alkenone.
该发明涉及一种用于制备烯酮卤化前体的工艺,该工艺包括在包含烯酮或其卤化前体的液态反应介质中,将一个
羧酸卤化物与一个
乙烯基醚反应。同时,该发明还涉及一种用于制备烯酮的工艺,该工艺包括(a)通过将
乙烯基醚引入含有
羧酸卤化物的液态反应介质中,以形成烯酮的卤化前体,和(b)从所述前体中消除氢卤酸以形成烯酮。