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Synthesis of Substituted Dibenzothiophenes, Pyrazines, Quinoxalines, Flavones, Pyrimidines and Furans by Regioselective Palladium (0)-Catalyzed Cross-Coupling Reactions
2010
The palladium(0)-catalyzed Heck reactions of brominated benzothiophene provided functionalized dibenzothiophenes by 6π-electro cyclization reactions. Heck reactions of dichloropyrazine and quinoxaline provided dialkenyl-, 2-alkenyl-3-alkyl and dialkylpyrazines and quinoxalines. Suzuki-Miyaura reactions of the bis(triflate) of 7,8- dihyroxyflavone with arylboronic acids afforded aryl-substituted flavones with excellent site-selectivity. Sonogashira reactions of tetrachloropyrimidine and
doi:10.18453/rosdok_id00000807
fatcat:ihc47vjx3jgo7p62st3lrv2pka