Condensed heteroaromatic ring systems. XXIV. Palladium-catalyzed cyclization of 2-substituted phenylacetylenes in the presence of carbon monoxide
Y Kondo, F Shiga, N Murata, T Sakamoto, H Yamanaka
Index: Kondo, Yoshinori; Shiga, Futoshi; Murata, Naoko; Sakamoto, Takao; Yamanaka, Hiroshi Tetrahedron, 1994 , vol. 50, # 41 p. 11803 - 11812
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Citation Number: 134
Abstract
The palladium-catalyzed reaction of 2-alkynylanilines and 2-alkynylphenols in the presence of carbon monoxide and methanol under basic conditions gave the sequential cyclization/ carbonylation products, methyl 2-substituted indole and benzo [b]-furan-3-carboxylates. Similar reaction of 2-alkynylbenzamides gave 3-alkylidenisoindole derivatives.
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