Functionalization at C-2 and C-5 of N-benzenesulfonyl-4-azaindole 1 was performed by lithiation reactions and original palladium-catalyzed chemistry. It led to very useful new substituted 4-azaindole derivatives in fair to high yields.
Palladium catalyzed cross-coupling between phenyl- or naphthylboronic acids and benzylic bromides
作者:Sultan Chowdhury、Paris E. Georghiou
DOI:10.1016/s0040-4039(99)01566-x
日期:1999.10
The Suzuki-Miyaura palladium-catalyzed coupling reaction was extended to achieve mixed cross-coupling between substituted aryl and naphthyl mono- and bisbromomethanes with phenylboronic acid, 1-methoxy-2-naphthyl-, 3-methoxy-2-naphthyl-, or 4-methoxy-1-naphthylboronic acid to form the corresponding disubstituted methanes.
Computational and DNMR Investigation of the Isomerism and Stereodynamics of the 2,2′-Binaphthalene-1,1′-diol Scaffold
作者:Andrea Mazzanti、Michel Chiarucci、Keith W. Bentley、Christian Wolf
DOI:10.1021/jo5005229
日期:2014.4.18
stabilities of three conformational isomers of 2,2′-binaphthalene-1,1′-diol diisobutyrate and the energy barriers to rotation about the pivotal aryl–aryl bond and the two aryl–oxygen bonds were investigated by variable-temperature NMR spectroscopy in conjunction with DFT computations. The experimental and calculated data were found to be in very good agreement and provide new insights into the dynamic