Coumarins. VII. The Acid-catalyzed Reaction of Aromatic Compounds with β-Chlorocarboxylic Acids
作者:Kikumasa Sato、Yau-Shin Lin、Takeshi Amakasu
DOI:10.1246/bcsj.42.2600
日期:1969.9
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,