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.
Palladium-Catalyzed Intermolecular C-2 Alkenylation of Indoles Using Oxygen as the Oxidant
作者:Zhao-Lei Yan、Wen-Liang Chen、Ya-Ru Gao、Shuai Mao、Yan-Lei Zhang、Yong-Qiang Wang
DOI:10.1002/adsc.201300811
日期:2014.3.24
A general and efficient palladium‐catalyzed intermolecular direct C‐2 alkenylation of indolesusingoxygen as the oxidant has been developed. The reaction is of complete regio‐ and stereoselectivity. All products are E‐isomers at the C‐2‐position with no Z‐isomers and 3‐substituted products were detected.