Dd. Hennings et al., ANION-ACCELERATED PALLADIUM-MEDIATED INTRAMOLECULAR CYCLIZATIONS - SYNTHESIS OF BENZOFURANS, INDOLES, AND A BENZOPYRAN, Tetrahedron letters, 38(36), 1997, pp. 6379-6382
Substituted benzo-fused heterocycles such as indoles, benzofurans, and
a benzopyran were obtained using an intramolecular cross-coupling of
vinyl halides with phenols. This transformation represents a new route
to these heterocycles and is accomplished using a palladacyclic catal
yst under anionic conditions. (C) 1997 Elsevier Science Ltd.