作者:N. S. Masterova、S. Yu. Ryabova、L. M. Alekseeva、M. I. Evstratova、S. S. Kiselev、V. G. Granik
DOI:10.1007/s11172-010-0115-2
日期:2010.3
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.
用盐酸水溶液或气体对 β-(3-乙酰氧基吲哚-2-基)-α-氰基丙烯酸衍生物(乙酯和腈)进行酸处理,可得到新型 3-取代 2-氧代-2,5-二氢吡喃并[3,2-b]吲哚。2-氧代-2,5-二氢吡喃并[3,2-b]吲哚-3-甲腈转化为 2-氧代-2,5-二氢吡喃并[3,2-b]吲哚-3-甲亚胺乙酯。