Chemistry Letters

Synthesis of azuleno [1, 2-b]-and azuleno [1, 2-c] thiophenes by the reactions of 2H-cyclohepta [b] furan-2-ones with enamines of 3-oxotetrahydrothiophenes

K Fujimori, T Fujita, K Yamane, M Yasunami…

Index: Fujimori, Kunihide; Fujita, Takefumi; Yamane, Kameji; Yasunami, Masafumi; Takase, Kahei Chemistry Letters, 1983 , p. 1721 - 1724

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Citation Number: 18

Abstract

New heterocyclic compounds, azuleno [1, 2-b]-and azuleno [1, 2-c] thiophene, are synthesized by the reaction of 3-methoxycarbonyl-2H-cyclohepta [b] furan-2-one with morpholino enamines of 3-oxotetrahydrothiophene, followed by dehydrogenation of resulting dihydrocompounds with 2, 3-dichloro-5, 6-dicyano-p-benzoquinone.