Palladium-catalyzed cross-coupling of benzyltitanium(IV) reagents with aryl fluorides
作者:Yan Li
DOI:10.1007/s00706-021-02881-w
日期:2022.2
The first palladium-catalyzed cross-coupling between benzyltitanium(IV) reagents with aryl fluorides is reported. A variety of diarylmethanes can be prepared in good to excellent yields by the catalyst system of PdCl2(dppf)2 associated with 1-[2-(di-tert-butylphosphanyl)phenyl]-4-methoxypiperidine. This reaction offered a highly efficient approach to diarylmethanes that are commonly found in life-changing
In the presence of gallium dichloride, the reaction of carbonyl compounds or their dimethylacetals with aromatic compounds afforded Friedel-Crafts alkylated adducts in good yields. It was suggested that the adducts were obtained by way of a reduction of the carbonyl compounds or their dimethylacetals, followed by the Friedel-Crafts reaction in one-pot. This is the first organic synthetic method with gallium dichloride, low valent gallium.
BERGER, U.;BURGEMEISTER, TH.;DANNHARDT, G.;MAYER, K. K.;WIEGREBE, W., TETRAHEDRON, 1984, 40, N 1, 215-220
作者:BERGER, U.、BURGEMEISTER, TH.、DANNHARDT, G.、MAYER, K. K.、WIEGREBE, W.