Synthesis of Cyclic Alkenyl Triflates by a Cationic Cyclization Reaction and its Application in Biomimetic Polycyclizations and Synthesis of Terpenes
作者:Pedro Alonso、Pilar Pardo、Alicia Galván、Francisco J. Fañanás、Félix Rodríguez
DOI:10.1002/anie.201508077
日期:2015.12.14
cyclic alkenyl triflates. This new atom‐economical process is high yielding, scalable, technically very simple, proceeds without the need of any metallic reagent or catalyst, and more importantly, it complements and challenges conventional methodologies. We have also developed new biomimetic cationic cyclization reactions to yield interesting polycyclic compounds. As a demonstration of the potential of
环烯基三氟甲磺酸酯是有机合成中有用的中间体,通常通过酮与三氟甲磺酸酯的螯合和捕获反应从酮合成。由于所需的基本条件,该序列具有一些立体化学缺陷。在本文中,我们描述了一种新的酸介导的烯炔衍生物(或炔醇)的阳离子环化反应,以访问环状烯基三氟甲磺酸酯。这种新的经济实惠的方法具有高收率,可扩展性,技术上非常简单,无需任何金属试剂或催化剂即可进行的过程,更重要的是,它是对传统方法的补充和挑战。我们还开发了新的仿生阳离子环化反应,以产生有趣的多环化合物。为了证明这种方法在全合成中的潜力,