1、About 216224 g. (1.621.68 moles) of powdered anhydrous is added to a 1Lthree-necked flask.在1L的三口烧瓶中加入大约216-224g(1.621.68 moles)的无水三氯化铝。 While the free-flowing catalyst is stirred , 81 g. (0.67 mole) of is added from the dropping funnel in a slow stream over a period of 2030 minutes. 自由流动的催化剂边搅拌边用滴液漏斗缓慢滴加81g苯乙酰。Considerable heat is evolved, and, if the drops of ketone are not dispersed, darkening or charring occurs. 放热反应，假如滴加的酮不能被分散，就会变黑或是碳化。When about one-third of the has been added,
