Novel pyrano [3, 2-b] indole derivatives: synthesis and some properties

NS Masterova, SY Ryabova, LM Alekseeva…

文献索引：Masterova; Ryabova, S.Yu.; Alekseeva; Evstratova; Kiselev; Granik Russian Chemical Bulletin, 2010 , vol. 59, # 3 p. 637 - 641

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摘要

Abstract Acid treatment of β-(3-acetoxyindol-2-yl)-α-cyanoacrylic acid derivatives (ethyl ester and nitrile) with aqueous or gaseous HCl afforded novel 3-substituted 2-oxo-2, 5- dihydropyra-no [3, 2-b] indoles. 2-Oxo-2, 5-dihydropyrano [3, 2-b] indole-3-carbonitrile was converted into ethyl 2-oxo-2, 5-dihydropyrano [3, 2-b] indole-3-carboximidate.