| Popis: |
The cyclization reaction of ethynylanilines having phenyl, alkyl, methoxy, cyano, chloro, and ethoxycarbonyl groups with (polystyrylmethyl)trimethylammonium fluoride in dry MeCN under an argon atmosphere at 100°C proceeded in good yields to give the corresponding indoles without affecting these functional groups. Moreover, the polymer-supported fluoride could be reused for the cyclization reaction when the deprotection reaction of the N-substituted indole with the fluoride ion on resin did not occur under the cyclization conditions. |
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