Self-Condensation of Enaminodiones as a Method for Benzene Ring Construction: Synthesis of Diacyl-Substituted Phenols and Catechols
作者:Dmitrii L. Obydennov、Elena V. Chernyshova、Vyacheslav Y. Sosnovskikh
DOI:10.1021/acs.joc.9b00623
日期:2019.5.17
approach for the construction of the benzene core has been developed through self-condensation of available enaminodiones. Functionalized acyl-substituted phenols and catechols were obtained in 29–97% yields with high chemoselectivity under mild conditions. This base-promoted formal [4+2] annulation proceeds via cyclohexanone formation and involves the cascade transformation based on double Michael addition
通过可利用的对映二酮的自缩合,开发了一种新型的不含过渡金属的苯核结构。在温和条件下,以29-97%的产率获得了功能化的酰基取代的苯酚和邻苯二酚,并具有较高的化学选择性。这种由碱促进的正式[4 + 2]环空反应通过环己酮的形成进行,并涉及基于两次迈克尔加成和芳构化(复古克莱森裂解和胺消除)的级联转化。