Ambient Decarboxylative Arylation of Malonate Half-Esters via Oxidative Catalysis
作者:Patrick J. Moon、Shengkang Yin、Rylan J. Lundgren
DOI:10.1021/jacs.6b08906
日期:2016.10.26
We report decarboxylative carbonyl α-arylation by coupling of arylboron nucleophiles with malonic acid derivatives. This process is enabled by the merger of aerobicoxidative Cu catalysis with decarboxylative enolate interception reminiscent of malonyl-CoA reactivity in polyketide biosynthesis. This method enables the synthesis of monoaryl acetate derivatives containing electrophilic functional groups
我们报告了通过芳基硼亲核试剂与丙二酸衍生物偶联的脱羧羰基α-芳基化。这个过程是通过有氧氧化铜催化与脱羧烯醇化物拦截的结合来实现的,这让人联想到聚酮化合物生物合成中的丙二酰辅酶 A 反应性。该方法能够合成含有与现有α-芳基化反应范式不相容的亲电官能团的乙酸单芳基酯衍生物。该反应的效用在药物中间体合成和后期功能化中得到了证明。
A New β-Keto Amide Synthesis
作者:Scott McN. Sieburth、Yanping Chen
DOI:10.1055/s-2002-34845
日期:——
In a modification of the Wierenga-Skulnick β-ketoester synthesis, the dianions of malonic acid mono-amides were condensed with acid chlorides. Acidic workup led to decarboxylation and isolation of the corresponding β-keto amides in good-to-excellent yields. A similar procedure with cyanoacetic acid gave β-keto nitriles.