Facile synthesis of 2,3-dihydrobenzofuran-3-ylacetic acids by novel electrochemical sequential aryl radical cyclization-carboxylation of 2-allyloxybromobenzenes using methyl 4-tert-butylbenzoate as an electron-transfer mediator
Facile synthesis of 2,3-dihydrobenzofuran-3-ylacetic acids and related analogues was successfully carried out by a novel electrochemical aryl radical generation and its 5-exo cyclization followed by a carboxylation sequence of 2-allyloxybromobenzenes by u
Senboku, Hisanori,Michinishi, Jun-Ya,Hara, Shoji
supporting information; experimental part
p. 1567 - 1572
(2011/08/03)
Selectivity in the tandem cyclization - Carboxylation reaction of unsaturated haloaryl ethers catalyzed by electrogenerated nickel complexes
The electrochemical reduction of a series of 2-haloaryl ethers containing allyl and propargyl groups under CO2 allows the synthesis of benzofuranacetic acid derivatives. This novel intramolecular cyclization- carboxylation reaction is carried out in single-compartment cells and is catalyzed by [Ni(cyclam)Br2].
Olivero,Du?ach
p. 1885 - 1891
(2007/10/03)
OXYGEN HETEROCYCLES BY SULPHUR YLIDE ANNULATION: 2,3-DIHYDRO-BENZOFURAN-3-ACETIC ACIDS FROM ortho-HYDROXYBENZALACETIC ACID METHYL ESTERS AND DIMETHYLSULPHOXONIUM METHYLIDE
Several 2,3-dihydro-benzofuran-3-acetic acids have been synthesized from ortho-hydroxybenzalacetic acid methyl esters and dimethylsulphoxonium methylide by an annulation reaction.