Iodine-Mediated Intramolecular Dehydrogenative Coupling: Synthesis of <i>N</i>-Alkylindolo[3,2-<i>c</i>]- and -[2,3-<i>c</i>]quinoline Iodides
作者:Prajesh S. Volvoikar、Santosh G. Tilve
DOI:10.1021/acs.orglett.5b03392
日期:2016.3.4
intramolecular dehydrogenative coupling reaction is developed for the synthesis of a library of medicinally important 5,11-dialkylindolo[3,2-c]quinoline salts and 5,7-dimethylindolo[2,3-c]quinoline salts. The annulation reaction is followed by aromatization to yield tetracycles in good yield. This protocol is also demonstrated for the synthesis of the naturally occurring isocryptolepine in salt form.
开发了I 2 / TBHP介导的分子内脱氢偶联反应,用于合成具有医学重要性的5,11-二烷基吲哚并[3,2- c ]喹啉盐和5,7-二甲基吲哚并[2,3- c ]喹啉盐。环化反应后进行芳构化,以高收率得到四环。还证明了该方案可用于合成盐形式的天然存在的异隐油平。