The cyclization of 2-alkynylanilines in the presence of PdCl2 and nBu4NCl under an acidic CH2Cl2-HCI two-phase system affords 2-substituted indoles in good to high yield, at room temperature. The reaction is particularly suited to the one-flask preparation of 2-substituted indoles from 2-ethynylaniline.
PALLADIUM-CATALYZED CYCLIZATION OF 2-ALKYNYLANILINES TO 2-SUBSTITUTED INDOLES UNDER AN ACIDIC 2-PHASE SYSTEM
MARINELLI, Fabio
1994
Abstract
The cyclization of 2-alkynylanilines in the presence of PdCl2 and nBu4NCl under an acidic CH2Cl2-HCI two-phase system affords 2-substituted indoles in good to high yield, at room temperature. The reaction is particularly suited to the one-flask preparation of 2-substituted indoles from 2-ethynylaniline.File in questo prodotto:
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