作者:Yong He、Pasupathy Krishnamoorthy、Heather M. Lima、Yingzhong Chen、Haiyan Wu、Rasapalli Sivappa、H. V. Rasika Dias、Carl J. Lovely
DOI:10.1039/c0ob00657b
日期:——
An investigation of 4-vinylimidazoles as diene components in the intramolecular Diels–Alder reaction is described. In the course of these studies several parameters affecting the cycloaddition were evaluated including the nature of the imidazole protecting group, the type of dienophile and the linking group. These investigations established that amino linkers were generally more effective than either
描述了在分子内 Diels-Alder 反应中作为二烯组分的 4-乙烯基咪唑的研究。在这些研究过程中,评估了影响环加成反应的几个参数,包括咪唑保护基团的性质、亲二烯体的类型和连接基团。这些研究确定氨基接头通常比醚或酯更有效。在大多数情况下,环加成是高度立体选择性的,导致形成源自反过渡态的产物。吡咯-咪唑生物碱ageliferin的多取代四氢苯并咪唑核可以通过使用假二聚体4-乙烯基咪唑构建。