AbstractA direct synthesis of 2‐acylthiophenes has been developed through palladium‐catalyzed addition of thiophenes to nitriles. The reaction proceeded well under the palladium(II) acetate/2,2′‐bipyridine system and using D‐(+)‐camphorsulfonic acid as the additive. In addition, the obtained 2‐acylthiophenes could undergo further coupling reactions to generate novel products.magnified image
Friedel–Crafts acylation of aromatic compounds with carboxylic acids in the presence of P2O5/SiO2 under heterogeneous conditions
作者:Amin Zarei、Abdol R. Hajipour、Leila Khazdooz
DOI:10.1016/j.tetlet.2008.09.062
日期:2008.11
A convenient and efficient procedure for the Friedel–Crafts acylation of aromaticcompounds with carboxylic acids in the presence of P2O5/SiO2 is described. Both aromatic and aliphatic carboxylic acids reacted easily to afford the corresponding aromatic ketones. The use of non-toxic and inexpensive materials, simple and clean work-up, short reaction times and good yields of the products are the advantages
描述了一种在P 2 O 5 / SiO 2存在下芳族化合物与羧酸的Friedel-Crafts酰化的简便有效的方法。芳族和脂族羧酸都容易反应,得到相应的芳族酮。该方法的优点是使用无毒且廉价的材料,简单且清洁的后处理,较短的反应时间和良好的产物收率。