摘要:
2,3-Dihydropyridin-4(1H)-ones undergo direct C-H functionalization at C5 In the palladium(II)-catalyzed Hiyama reaction, using triethoxy(aryl)silanes and dimethylphenylsilanol. The reagent CuF2 has a dual role In the reactions with triethoxy(aryl)silanes. It Is a source of fluoride to activate the sllane in the Hiyama reaction and also serves as the reoxidant to convert Pd(0) to Pd(II) In the catalytic cycle.