A General Synthesis of Substituted Indoles from Cyclic Enol Ethers and Enol Lactones
作者:Kevin R. Campos、Jacqueline C. S. Woo、Sandra Lee、Richard D. Tillyer
DOI:10.1021/ol036113f
日期:2004.1.1
[reaction: see text] X = CH2, C[double bond]O, R2 = H, alkyl. A general method was developed for the one-pot synthesis of highly functionalized indoles from simple, commercially available aryl hydrazines and cyclic enol ethers. Enol lactones were also used as substrates, affording substituted indole acetic acid or indole propionic acid derivatives. This procedure affords 2,3-disubstituted indoles as
[反应:见正文] X = CH 2,C [双键] O,R 2 = H,烷基。已开发了一种通用方法,用于从简单的市售芳基肼和环状烯醇醚一锅合成高官能化的吲哚。烯醇内酯也用作底物,提供取代的吲哚乙酸或吲哚丙酸衍生物。该方法由适当取代的烯醇醚或烯醇内酯得到2,3-二取代的吲哚,作为单一的区域异构体。该方法在抗偏头痛药物舒马曲坦和消炎药消炎痛的有效合成中得到了强调。