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Palladium-mediated heteroannulation of internal alkynes with resin-bou
nd o-iodoaniline derivatives 4 or Sa provided diverse trisubstituted i
ndoles 6 in good yields. The facile reaction of trimethylsilylalkynes
afforded resin-bound precursors useful for obtaining other 2-substitut
ed indole derivatives, such as 12. (C) 1997 Elsevier Science Ltd.