The aluminum chloride-catalyzed reaction of aromatic compounds, such as benzene and phenols, with β-chlorocarboxylic acids was investigated. Although the reactions of benzene, toluene, and chlorobenzene with β-chloropropionic acid were found to give the corresponding dihydrocinnamic acids in high yields, attempts to prepare dihydrocoumarin by a similar reaction of phenol were unsuccessful. Similarly
研究了苯和
苯酚等芳香族化合物与 β-
氯代
羧酸的
氯化铝催化反应。尽管发现苯、
甲苯和
氯苯与 β-
氯丙酸反应以高产率得到相应的二氢
肉桂酸,但通过
苯酚的类似反应制备二氢
香豆素的尝试并未成功。类似地,通过
氯化铝诱导的
芳烃与 β-
氯丁酸 (Ib) 的反应,以良好的收率获得了 β-芳基
丁酸。相比之下,
酚类,如
苯酚、
邻甲酚和
间甲酚,在类似条件下与 Ib 反应,以 22-60% 的产率提供相应的 β-(对羟基苯基)
丁酸,