Efficient Iron/Copper-Cocatalyzed O-Arylation of Phenols with Bromoarenes
作者:Songlin Zhang、Xiaoyan Liu
DOI:10.1055/s-0030-1259291
日期:2011.1
Low catalytic amount CuI and Fe(acac)3 were found to effectively promote the C-O cross-coupling reaction in the presence of K2CO3 as the base. A serious of diaryl ethers with different substitutents can be synthesized in good to excellent yields. This efficient and economic method is attractive for applications on an industrial scale.
Copper(II) trans-bis-(glycinato): an efficient heterogeneous catalyst for cross coupling of phenols with aryl halides
作者:Sanny Verma、Neeraj Kumar、Suman L. Jain
DOI:10.1016/j.tetlet.2012.06.071
日期:2012.8
Copper(II) trans-bis-(glycinato) complex, easily prepared by the solid state reaction of copper(II) acetate and glycine (trans-[Cu(glyo)2·H2O]) was found to be an efficient, recyclable, and high yielding catalyst for the Ullmann type synthesis of diaryl ethers via the crosscoupling of phenols with arylhalides without using any additives at relatively low reaction temperature. The catalyst could easily
New N- and O-arylations with phenylboronic acids and cupric acetate
作者:Dominic M.T Chan、Kevin L Monaco、Ru-Ping Wang、Michael P Winters
DOI:10.1016/s0040-4039(98)00503-6
日期:1998.5
compounds at room temperature with phenylboronic acids and cupric acetate in the presence of a tertiary amine promoter is described. Substrates include phenols, amines, anilines, amides, imides, ureas, carbamates, and sulfonamides.
Ten alkyl-substituted dibenzofurans (3) have been synthesized by irridiation of the corresponding diphenyl ethers (4). 13C Chemical shift analysis indicates that some of the highly substituted compounds (3d, g–i) are probably twisted out of the molecular plane due to steric interaction of the substituents in the 1 and 9 positions.