Copper-Catalyzed Decarboxylation of Aromatic Carboxylic Acids: En Route to Milder Reaction Conditions
作者:Gérard Cahiez、Alban Moyeux、Olivier Gager、Maël Poizat
DOI:10.1002/adsc.201201018
日期:2013.3.11
The copper‐catalyzed decarboxylation of carboxylic aromatic acids has been advantageously achieved by using aliphatic amines like tetramethylethylenediamine (TMEDA) or hexamethylenetetraamine (HMTA) as ligands instead of the aromatic heterocyclic amines (quinoline, phenanthroline) used until now. The improvement is significant since the reaction can be performed at a lower temperature (ca. 50 °C less)
通过使用脂肪族胺(例如四甲基乙二胺(TMEDA)或六亚甲基四胺(HMTA))作为配体代替目前使用的芳香族杂环胺(喹啉,菲咯啉),可以有利地实现铜催化的羧酸芳族羧酸的脱羧。由于该反应可以在较低的温度(约低50℃)下进行,并且反应时间明显较短(15分钟,而不是12至24小时),因此该改进非常重要。