Stereoselective Synthesis of Cyclic Guanidines by Directed Diamination of Unactivated Alkenes
作者:Artur K. Mailyan、Kyle Young、Joanna L. Chen、Bradley T. Reid、Armen Zakarian
DOI:10.1021/acs.orglett.6b02778
日期:2016.11.4
method for a directed stereoselective guanidinylation of alkenes is described. The guanidine unit can be delivered as an intact fragment by a hydroxy or carboxy group, usually with a high level of stereocontrol. After the guanidine delivery, the directing group can be cleaved under exceptionally mild conditions, typically by alcoholysis in the presence of acetic acid. Broad functional group tolerance
描述了用于烯烃的定向立体选择性胍基化的方法。胍单元可以通过羟基或羧基作为完整片段递送,通常具有高水平的立体控制。胍基递送后,可以在异常温和的条件下,通常通过在乙酸的存在下进行醇解,来切割该导向基团。宽泛的官能团耐受性和环胍基化的温和反应条件表明其在药物化学和天然产物合成中的应用。