Catalytic Enantioselective Synthesis of Atropisomeric Biaryls: A Cation-Directed Nucleophilic Aromatic Substitution Reaction
作者:Roly J. Armstrong、Martin D. Smith
DOI:10.1002/anie.201408205
日期:2014.11.17
enantioselective nucleophilic aromatic substitution reaction which yields axially chiral biaryl derivatives in excellent yields with e.r. values of up to 97:3 has been developed. This process uses a chiral counterion to direct the addition of thiophenolate to a prochiral dichloropyrimidine by a tandem desymmetrization/kinetic resolution mechanism. The products can be derivatized to a range of atropisomeric
已经开发出催化对映体选择性亲核芳族取代反应,该反应以优异的收率和高达97:3的er值产生轴向手性联芳基衍生物。该方法使用手性抗衡离子通过串联不对称化/动力学拆分机制将硫酚盐添加到前手性二氯嘧啶上。该产物可以衍生为一系列的阻转异构体结构,而对映体富集度没有任何降低,因此提供了未开发的手性联芳基结构的途径。