作者:Kazuhiro Chiba、Takaaki Arakawa、Masahiro Tada
DOI:10.1039/a802306i
日期:——
Six natural euglobals were synthesized by electrochemical methods. In a key step, cycloaddition between in situ generated quinomethanes and terpenes was performed on the surface of PTFE-fibre coated electrode to give natural products using 2,3-dichloro-5,6-dicyano-p-hydroquinone (DDQH2) as a redox mediator. In this reaction system, biomimetic generation and cycloaddition of the unstable quinomethanes were efficiently completed by the selective oxidation of cresol derivatives.
通过电化学方法合成了六种天然尤格洛布林。关键步骤是在聚四氟乙烯纤维涂层电极表面,现场生成的喹诺甲烷与萜类化合物进行环加成反应,以2,3-二氯-5,6-二氰基对苯二酚(DDQH2)作为氧化还原介质,得到天然产物。在该反应体系中,通过对甲酚衍生物的选择性氧化,高效地完成了不稳定喹诺甲烷的仿生生成和环加成反应。