Palladium-Catalyzed Amination and Amidation of Benzo-Fused Bromine-Containing Heterocycles
作者:A. G. Sergeev、G. A. Artamkina、V. S. Velezheva、I. N. Fedorova、I. P. Beletskaya
DOI:10.1007/s11178-005-0257-0
日期:2005.6
Amination and amidation of bromoindole, 6-bromo-1,2,3,4-tetrahydrocarbazol-1-one, and 8-bromo-2,4,5,6-tetrahydro-1H-pyrazino[3,2,1-jk]carbazole derivatives was effected in the presence of palladium complexes. The use of the catalytic system Pd2dba3⋅CHCl3-2-[di(tert-butyl)phosphino]biphenyl in the amination and of Pd2dba3⋅CHCl3-Xantphos [or 3,5-(CF3)2Xantphos] in the amidation ensured moderate to high yields of the corresponding products.
在钯配合物的存在下,溴吲哚、6-溴-1,2,3,4-四氢咔唑-1-酮和 8-溴-2,4,5,6-四氢-1H-吡嗪并[3,2,1-jk]咔唑衍生物发生了胺化和酰胺化反应。在胺化反应中使用 Pd2dba3⋅CHCl3-2-[di(tert-butyl)phosphino]biphenyl 催化体系,在酰胺化反应中使用 Pd2dba3⋅CHCl3-Xantphos [或 3,5-(CF3)2Xantphos]催化体系,确保了相应产物的中等至高产率。