A SIMPLIFIED AND STEPWISE SYNTHETIC METHOD FOR PRODUCING STERICALLY CONGESTED UNSYMMETRICAL 1,2-DICARBONYL RADICALS WAS SUCCESSFULLY DEMONSTRATED INCLUDING DETAILED CHARACTERIZATION OF EACH RADICAL CATION. USING THIS APPROACH, AN ARYL- AND N-HETEROCYCLIC CARBENE-SUBSTITUTED 1,2-DICARBONYL RADICAL IN ITS NEUTRAL FORM IS GENERATED, REVEALING THE STABILIZING ROLE OF N-HETEROCYCLIC CARBENES.

中文翻译：

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通过逐步方法合成空间拥挤的不对称 1,2-二羰基自由基


成功演示了一种用于生产空间拥挤不对称 1,2-二羰基自由基的简化逐步合成方法，包括每个自由基阳离子的详细表征。使用这种方法，生成中性形式的芳基和 N-杂环卡宾取代的 1,2-二羰基自由基，揭示了 N-杂环卡宾的稳定作用。