Amine-Catalyzed [3+3] Annulation Reaction Between alpha-Alkylidene Pyrazolinones and alpha,beta-Unsaturated Aldehydes for the Construction of Spiropyrazolones
关键词: Amine catalyst | alpha-Alkylidene pyrazolinone | alpha,beta-Unsaturated aldehydes | [3+3] Annulation | Spirocyclic compound | ASYMMETRIC-SYNTHESIS | ENANTIOSELECTIVE SYNTHESIS | SPIROCYCLIC SCAFFOLDS | STEREOGENIC CENTERS | ONE-POT...
📌 详细信息：
📑Wang, Zhuo-Yi | Chen, Fei... - 《Synthesis: International Journal of Methods in Synthetic Organic Chemistry》 - 2026,58(05) - 545～551 -
📄 详细内容
摘要：A secondary amine-catalyzed [3+3] annulation | of alpha-alkylidene pyrazolinones with alpha,beta | -unsaturated aldehydes was reported. Conducted in ethanol | with acetic acid as an additive, the reaction | proceeds at room temperature under a nitrogen atmosphere
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