cleavage in this reaction is usually promoted by a number of transition-metal Lewis acid catalysts or organic Brønsted acids/bases. Herein we report a new convenient and efficient method utilizing the tropylium ion as a mild and environmentally friendly organocatalyst to mediate retro-Claisen-type reactions. Using this method, a range of synthetically valuable substances can be accessed via solvolysis of
的复古-Claisen反应是在有机合成常用来访问酯衍
生物由1,3-二羰基前体。通常通过许多过渡
金属
路易斯酸催化剂或有机布朗斯台德酸/碱来促进该反应中的C–C键裂解。在本文中,我们报告了一种新的便捷有效的方法,该方法利用对苯二酸
铵离子作为温和且环保的有机催化剂来介导逆克莱森型反应。使用这种方法,可以通过1,3-二羰基化合物的溶剂分解获得一系列有价值的合成物质。