A new palladium-catalyzed cyclization of N-alkenyl-o-haloanilines with selective isomerization of a double bond followed by formal 5-endo-trig cyclization was developed. A variety of fused and 2-substitutedindoles were synthesized from enaminoesters prepared by condensation of β-ketoesters and o-iodoaniline.
Novel Synthesis of Fused Indoles by the Palladium-Catalyzed Cyclization of<i>N</i>-Cycloalkenyl-<i>o</i>-haloanilines
作者:Atsushi Nishida、Takeshi Watanabe、Shigeru Arai
DOI:10.1055/s-2004-820039
日期:——
A new palladium-catalyzed cyclization of N-alkenyl-o-haloanilines with selective isomerization of a double bond followed by 5-endo cyclization was developed and used to synthesize fused indoles.