Design and application of intramolecular vinylogous Michael reaction for the construction of 2-alkenyl indoles
作者:Battu Harish、Sanjay Yadav、Surisetti Suresh
DOI:10.1039/d0cc06564a
日期:——
A base-mediated transformation based on a designed intramolecular vinylogous Michael addition (intra-VMA) is presented to access 3-substituted 2-alkenyl indole derivatives. The reaction represents the first example of the intra-VMA for the construction of indoles. A one-pot N-allylation of ortho-tosylamidocinnamates/congeners with γ-bromocrotonates followed by intra-VMA has been described to provide
提出了基于设计的分子内乙烯基迈克尔加成(intra-VMA)的碱基介导的转化,以获取3-取代的2-烯基吲哚衍生物。该反应代表用于吲哚构建的内部VMA的第一个实例。已经描述了邻甲苯磺酰胺基肉桂酸酯/同类物与γ-溴巴豆酸酯的一锅N-烯丙基化,然后是VMA内的制备,以合理的高产率获得了各种2-烯基吲哚衍生物。克分子合成的代表性吲哚衍生物以及MK-7246(默克公司的临床CRTH2拮抗剂)的正式合成已证明了已开发的VMA的合成价值。