Abstract
Irrespective of the isomeric ratio of the starting material, the palladium-catalyzed cyclization of oxime ethers with an aryl halide moiety proceeds in a highly Z-selective manner to give indolin-3-one O-alkyl oximes in good yields (see scheme). The reaction is also applicable to the construction of benzofuran-3-one and fused-indole frameworks. R1=H, Me, OMe, CO2Me; R2=Me, benzyl; Ts=p-toluenesulfonyl.
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