Scandium-Catalyzed Electrochemical Synthesis of α-Pyridinyl Tertiary Amino Acids and Esters
作者:Feng Liu、Weijie Ding、Jiacong Lin、Xu Cheng
DOI:10.1021/acs.orglett.3c02734
日期:2023.10.27
α-Pyridyl tertiaryamino acids have potential pharmaceutical applications because of their structural features. However, their synthesis is still highly limited. Herein, we report a straightforward approach for the electrochemical synthesis of tertiary α-substituted amino acid derivatives via three-component reductive coupling. Using gaseous ammonia as both the N and H source, the α-keto ester reacts
α-吡啶基叔氨基酸由于其结构特征而具有潜在的药物应用。然而,它们的合成仍然非常有限。在此,我们报告了一种通过三组分还原偶联电化学合成叔α-取代氨基酸衍生物的简单方法。使用气态氨作为 N 源和 H 源,α-酮酯直接与 4-CN-吡啶反应。钪催化的应用是实现各种副反应途径化学选择性的关键。
Diastereoselective Carboxyl Migrations of 3-Arylbenzofuranones
作者:Gorka Peris、Edwin Vedejs
DOI:10.1021/jo7021444
日期:2008.2.1
[GRAPHICS]Mixed benzofuranyl carbonates derived from chiral chloro-formates rearranged in the presence of nucleophilic catalysts to give C-carboxylated benzofurans with variable dr. The use of chiral nucleophilic catalysts gave modest improvement in dr, but better results were obtained by optimizing auxiliary and catalyst. Thus, 8k was obtained with 9:1 dr.