Tetrahedron letters

4-(phenylsulfonyl)-4H-furo [3, 4-b] indole-A stable synthetic analogue of indole-2, 3-quinodimethane

MG Saulnier, GW Gribble

Index: Saulnier, Mark G.; Gribble, Gordon W. Tetrahedron Letters, 1983 , vol. 24, # 49 p. 5435 - 5438

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Citation Number: 47

Abstract

Summary: The N-phenylsulfonyl derivative (2) of the previously unknown fused heterocycle 4H-furo [3, 4-blindole is synthesized from indole-3-carboxaldehyde(2) in 28% yield and undergoes a Diels-Alder reaction with benzyne to give 5H-benzo [b] carbazole(11) in-33% yield after deoxygenation and deprotection.