TEMPO-Mediated Aza-Diels–Alder Reaction: Synthesis of Tetrahydropyridazines Using Ketohydrazones and Olefins
作者:Xiu-Long Yang、Xie-Xue Peng、Fei Chen、Bing Han
DOI:10.1021/acs.orglett.6b00702
日期:2016.5.6
facile, and efficient method for the synthesis of tetrahydropyridazines by a one-pot tandem reaction of easily accessible ketohydrazones and olefins in the presence of 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) has been successfully developed. The reaction involves the initial generation of azoalkenes from direct oxidative dehydrogenation of ketohydrazones using TEMPO as the commercially available
在存在2,2,6,6-四甲基哌啶-1-氧基(TEMPO)的情况下,通过易于接近的酮hydr和烯烃的一锅串联反应,成功开发了一种新颖,便捷,高效的四氢哒嗪合成方法。 。该反应涉及使用TEMPO作为可商购的氧化剂,通过对肼hydr的直接氧化脱氢反应,首先生成偶氮烯烃,然后再与烯烃进行aza-Diels-Alder反应。