Monoalkylation of cyclic anhydrides provides an opportunity to couple a carbon-carbon bond-forming event with the control of backbone stereochemistry. We have developed a palladium-JOSIPHOS catalyst system that desymmetrizes meso-succinic anhydrides using organozinc reagents as nucleophiles, and have found that, in many cases, this reaction proceeds at ambient temperature.
环状酸酐的单烷基化提供了将
碳-
碳键形成事件与骨架立体
化学控制相结合的机会。我们开发了一种
钯-J
OSIPHOS
催化剂体系,该体系使用
有机锌试剂作为亲核试剂使内消旋
琥珀酸酐去对称化,并发现在许多情况下,该反应在环境温度下进行。