作者:Olexandr Halaiev、Myroslav Garazd、Andrzej Gzella、Roman Lesyk
DOI:10.1016/j.tetlet.2017.02.049
日期:2017.3
Unexpected regioselectivity for the Skraup-Doebner-Von Miller reaction was observed during the synthesis of quinolines from 4-aminoindoles and acetone in the presence of hydrochloric acid as a catalyst. The products were unambiguously assigned as 1-alkyl-3,5,5-trimethyl-5,6-dihydro-1H-azepino[4,3,2-cd]indoles instead of 2,2,4-trimethyl-2,7-dihydro-1H-pyrrolo[2,3-h]quinolones based on NMR spectroscopy
在盐酸为催化剂的情况下,由4-氨基吲哚和丙酮合成喹啉的过程中,观察到了对Skraup-Doebner-Von Miller反应的意外区域选择性。产物明确地指定为1-烷基-3,5,5-三甲基-5,6-二氢-1 H-叠氮基[4,3,2- cd ]吲哚而不是2,2,4-三甲基-2,基于NMR光谱和X射线晶体学分析的7-二氢-1 H-吡咯并[2,3- h ]喹诺酮。