苯乙烯在过氧化苯甲酰催化下100～110℃氯化,生成的粗产品的组成(13种成分,见图1与表1)虽复杂,但与氢氧化钠乙醇溶液于170℃,20公斤/平方厘米压力下反应2小时后的酸性产物较为简单,主要是苯乙酸(总产率56～63%)和α-乙氧基苯乙酸(总产率约7%)及少量苯甲酸(总产率约0.6%).以消耗的苯乙烯计算,酸性物质的总产率为63～71%. Styrene in the benzoyl peroxide catalyzed by 100 ~ 110 ℃ chloride, the crude product composition (13 components, see Figure 1 and Table 1) is complicated, but with sodium hydroxide ethanol solution at 170 ℃, 20 The acidic product after reaction for 2 hours under a pressure of 2 kg / cm 2 is relatively simple, mainly phenylacetic acid (total yield 56-63%) and α-ethoxyphenylacetic acid (total yield about 7%) and a small amount of benzoic acid The total yield was about 0.6%.) The total yield of acidic material was 63-71% based on the consumed styrene.