Synthesis of New Optically Active and Racemic Phenylsuccinamic Acids
作者:R. Stephani、V. Cesare、I. Sadarangani、I. Lengyel
DOI:10.1055/s-2002-19294
日期:——
characterization of new (S)-(+)- and racemic phenylsuccinamic acids, obtained from the reaction of (S)-(+)-phenylsuccinic anhydride (1) with five different primary amines (2a-e) is described.Ring opening of anhydride 1 led to the formation of two isomeric phenylsuccinamic acid products with the phenyl substituent β to the amide function being the preferred product. Complete racemization occurred with all of the
Photocatalytic coupling of electron-deficient alkenes using oxalic acid as a traceless linchpin
作者:Zugen Wu、Mingyue Wu、Kun Zhu、Jie Wu、Yixin Lu
DOI:10.1016/j.chempr.2022.12.013
日期:2023.1
Reductive alkene cross-coupling represents a straightforward strategy for the construction of C–C bonds from readily available alkene feedstocks. A one-pot protocol, utilizing oxalic acid as a traceless linchpin, has been developed to achieve direct cross-coupling of electron-deficient alkenes. The overall process is a two-step transformation involving hydrocarboxylation followed by decarboxylative
还原性烯烃交叉偶联代表了从现成的烯烃原料构建 C-C 键的直接策略。已经开发出一种利用草酸作为无痕关键的一锅法来实现缺电子烯烃的直接交叉偶联。整个过程是一个两步转化,涉及加氢羧化,然后是脱羧交叉偶联。双光催化剂系统对于成功至关重要,并协同促进两个反应步骤。该反应支持生物活性分子的有效合成。光氧化还原催化为 CO 2的生成提供了一种简单而温和的途径从草酸中分离出自由基阴离子,这为这种活性中间体在精细化学品合成中的广泛应用铺平了道路。