Palladium(II)-Catalyzed Regioselective Direct C2 Alkenylation of Indoles and Pyrroles Assisted by the<i>N</i>-(2-Pyridyl)sulfonyl Protecting Group
作者:Alfonso García-Rubia、Ramón Gómez Arrayás、Juan C. Carretero
DOI:10.1002/anie.200902802
日期:2009.8.17
N‐(2‐pyridyl)sulfonyl group controls the direct PdII‐catalyzed alkenylation of indoles, affording the corresponding products in good yields and with complete regiocontrol at C2 (see scheme, DMA=dimethylacetamide). The protocol was also extended to pyrrole derivatives. The final reductive desulfonylation affords the C2‐substituted indoles and pyrroles in good yields.