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本文中在对甲苯横酸的催化下，以肉桂醛，１，３－丙二醇和氢溴酸为原料合成了环状Ｂ－卤代缩醛类的题示物，并通过ＩＲ，１ＨＮＭＲ等光谱手段对产物结构进行了确证。
In the present paper, the title compounds of cyclic B-haloacetals were synthesized from cinnamaldehyde, 1,3-propanediol and hydrobromic acid under the catalysis of toluene-trans-acid, and were characterized by IR, 1HNMR and other spectroscopic methods The product structure was confirmed.