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 radicalsderivedfrom arenediazonium salts are also reported. The relative ease of removal of the oxidized by-products of TDAE from the reaction
Enantioselective Synthesis of Dihydrobenzofurans, Dihydrobenzosulfones, and Dihydroindoles by Merging One‐pot Intramolecular Heck‐Matsuda Reactions from Anilines with Redox‐Relay Process
A one-pot tandem protocol is reported for the enantioselective Pd-catalyzed synthesis of dihydrobenzofuran, dihydroindole, and dihydrobenzosulfone scaffolds by a Heck-Matsuda reaction under open-flask conditions with in situ generation of aryldiazonium salt directly from anilines. The enantioenriched heterocycles are synthesized in overall yields up to 78 % in enantiomeric ratios up to 99 : 1 by a