The switchable three-component reactions of 5-amino-3-methylisoxazole, salicylaldehyde and N-aryl-3-oxobutanamides under different conditions were studied and discussed. The unexpected influence of the aryl substituent in N-aryl-3-oxobutanamides on the behavior of the reaction was discovered. The key influence of ultrasonication and Lewis acid catalysts led to an established protocol to selectively obtain two or three types of heterocyclic scaffolds depending on the substituent in the N-aryl moiety.
研究和讨论了5-氨基-3-甲基异噁唑、水杨醛和N-芳基-3-氧代丁酰胺的可切换三组分反应在不同条件下的情况。发现了N-芳基-3-氧代丁酰胺中芳基取代基对反应行为的意外影响。超声波处理和Lewis酸催化剂的关键影响导致建立了一个方案,可以选择性地获得两种或三种异环骨架,具体取决于N-芳基中的取代基。