The chemoselective alkynylation of dihaloquinolines by the Sonogashira—Hagihara reaction
作者:I. P. Beletskaya、G. V. Latyshev、A. V. Tsvetkov、N. V. Lukashev
DOI:10.1023/b:rucb.0000024849.57521.49
日期:2004.1
Conditions for the regioselective Sonogashira-Hagihara alkynylation of 4-chloro-6-iodo(bromo)quinolines were found and 6-alkynyl-4-chloroquinolines were obtained in 90-100% yields.
Successive Replacement of Halogen Atoms in 4,6-Dihaloquinolines in Cross-coupling Reactions with Arylboronic Acids Catalyzed by Palladium and Nickel Complexes
作者:I. P. Beletskaya、A. V. Tsvetkov、G. V. Latyshev、N. V. Lukashev
DOI:10.1023/b:rujo.0000013144.15578.2d
日期:2003.11
Conditions were found where in 6-halo-4-quinolines (halogen = iodine, bromine, or chlorine) the halo-en atoms were replaced in succession by similar or different aryl groups in cross-coupling reactions with arylboric acids catalyzed by palladium and nickel complexes. Basing on successive Suzuki reaction a convenient procedure was developed for preparation of diarylquinolines that did not require isolation of the intermediate monoarylation product and afforded almost quantitative yields of diarylquinolines.