Ni-Electrocatalytic Enantioselective Doubly Decarboxylative C(sp<sup>3</sup>)–C(sp<sup>3</sup>) Cross Coupling
作者:Yang Gao、Benxiang Zhang、Jiayan He、Phil S. Baran
DOI:10.1021/jacs.3c03337
日期:2023.5.31
decarboxylative cross coupling are disclosed. Malonate half amides are smoothly coupled to a variety of primary carboxylic acids after formation of the corresponding redox-active esters under Ni-electrocatalytic conditions using a new chiral ligand based on PyBox, resulting in amides with α-alkylated stereocenters. The scope of the reaction is broad, tolerating numerous functional groups, and uniformly
公开了对映选择性双脱羧交叉偶联的第一个实例。使用基于 PyBox 的新型手性配体,在 Ni 电催化条件下形成相应的氧化还原活性酯后,丙二酸半酰胺可以顺利地与各种伯羧酸偶联,从而产生具有 α-烷基化立体中心的酰胺。反应范围广,可耐受多种官能团,且反应均匀且ee值高。最后,大量案例研究证明了这种对映选择性自由基-自由基还原交叉偶联在简化合成方面的潜在效用。