Synthesis 2016; 48(12): 1872-1879
DOI: 10.1055/s-0035-1561856
special topic
© Georg Thieme Verlag Stuttgart · New York

Palladium-Catalyzed C–H Activation and Cyclization of Anilides with 2-Iodoacetates and 2-Iodobenzoates: An Efficient Method toward Oxindoles and Phenanthridones

Parthasarathy Gandeepan
Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan   Email: chcheng@mx.nthu.edu.tw
,
Pachaiyappan Rajamalli
Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan   Email: chcheng@mx.nthu.edu.tw
,
Chien-Hong Cheng*
Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan   Email: chcheng@mx.nthu.edu.tw
› Author Affiliations
Further Information

Publication History

Received: 10 January 2016

Accepted after revision: 02 March 2016

Publication Date:
10 May 2016 (online)


Abstract

A concise approach to the synthesis of oxindoles and phenanthridones from anilides is described. In the presence of catalytic amount of Pd(OAc)2, 2-iodoacetates and 2-iodobenzoates can be used to functionalize ortho C–H bond of anilides, which subsequently undergo intramolecular cyclization to give the products. A possible reaction mechanism that involves a PdII/PdIV catalytic cycle is proposed with the support of detailed mechanistic studies.

Supporting Information