A series of novel 2-amino-5,6,7,8-tetrahydro-4,7,7-trimethyl-5-oxo-4-aryl-4H-benzo[b]pyran-3-carbonitriles was obtained from the reaction of 2-(1-arylethylidene)malononitrile and 5,5-dimethylcyclohexane-1,3-dione in an ionic liquid at 90°C. This method had the advantages of operational simplicity, mild reaction conditions and an environmentally benign procedure.
反应得到了一系列新型的2-
氨基-5,6,7,8-四氢-4,7,7-三甲基-5-氧代-4-芳基-4H-苯并[b]
吡喃-3-腈化合物2-(1-芳基亚乙基)
丙二腈和 5,5-二
甲基环己烷-1,3-二酮在 90°C 的
离子液体中的反应。该方法具有操作简单、反应条件温和、过程环保等优点。