Catalyst‐Free Deaminative Functionalizations of Primary Amines by Photoinduced Single‐Electron Transfer
作者:Jingjing Wu、Phillip S. Grant、Xiabing Li、Adam Noble、Varinder K. Aggarwal
DOI:10.1002/anie.201814452
日期:2019.4.16
The use of pyridinium‐activated primary amines as photoactive functional groups for deaminative generation of alkyl radicals under catalyst‐free conditions is described. By taking advantage of the visible light absorptivity of electron donor–acceptor complexes between Katritzky pyridinium salts and either Hantzsch ester or Et3N, photoinduced single‐electron transfer could be initiated in the absence
描述了使用吡啶鎓活化的伯胺作为光敏官能团,在无催化剂的条件下脱氨基生成烷基的方法。通过利用Katritzky吡啶鎓盐与Hantzsch酯或Et 3 N之间的电子供体-受体配合物的可见光吸收率,可以在没有光催化剂的情况下引发光诱导的单电子转移。该通用反应平台已应用于脱氨基烷基化(Giese),烯丙基化,乙烯基化,炔基化,硫醚化和加氢脱氨反应。温和的条件适合各种伯和仲烷基吡啶鎓,并显示出宽泛的官能团耐受性。