Supramolecular Host-Selective Activation of Iodoarenes by Encapsulated Organometallics
作者:Trandon A. Bender、Mariko Morimoto、Robert G. Bergman、Kenneth N. Raymond、F. Dean Toste
DOI:10.1021/jacs.8b11842
日期:2019.1.30
interactions, enabling reactivity that would otherwise be challenging in bulk solution. While impressive rate enhancements and selectivities have been reported, similar reactivity can often be accessed through modifications of reaction conditions even in the absence of the host. We report here an oxidative addition of aryl halides across the metal centers in Cu(I) and Pd(II) organometallics that is assisted
超分子宿主提供明确的微环境,促进选择性的宿主 - 客体相互作用,实现在批量解决方案中具有挑战性的反应性。虽然已经报道了令人印象深刻的速率增强和选择性,但即使在没有宿主的情况下,通常也可以通过修改反应条件来获得类似的反应性。我们在此报告了在 Cu(I) 和 Pd(II) 有机金属化合物的金属中心上氧化加成芳基卤化物,这在超分子宿主的存在下进行,通过静电稳定和增加局部底物浓度来实现。当筛选反应条件以评估背景反应性时,会产生替代反应性(通常是分解),表明封装导致宿主选择性反应轨迹。