Reduction of arenediazonium salts by tetrakis(dimethylamino)ethylene (TDAE): Efficient formation of products derived from aryl radicals
作者:Mohan Mahesh、John A Murphy、Franck LeStrat、Hans Peter Wessel
DOI:10.3762/bjoc.5.1
日期:——
arenediazonium salts to aryl radical intermediates through a single electron transfer (SET) pathway. Cyclization of the aryl radicals produced in this way led, in appropriate substrates, to syntheses of indolines and indoles. Cascade radical cyclizations of aryl radicals derived from arenediazonium salts are also reported. The relative ease of removal of the oxidized by-products of TDAE from the reaction
四(二甲氨基)乙烯(TDAE 1)首次被用作一种温和的试剂,用于通过单电子转移(SET)途径将芳烃重氮盐还原为芳基自由基中间体。以这种方式产生的芳基环化导致在适当的底物中合成二氢吲哚和吲哚。还报道了衍生自芳烃重氮盐的芳基的级联自由基环化。从反应混合物中去除 TDAE 的氧化副产物相对容易,这使得该方法具有综合吸引力。