899694-59-8Relevant articles and documents
Oxygenophilic Lewis Acid Promoted Synthesis of 2-Arylindoles from Anilines and Cyanoepoxides in Alcohol
Xu, Chuangchuang,Xu, Jiaxi
, p. 14733 - 14742 (2018)
A convenient synthetic method to indoles from anilines and cyanoepoxides was developed under the catalysis of BF3·OEt2 or AlCl3 in alcohols. The reaction involves a tandem reaction of the regiospecific ring-opening of cyanoepoxides with anilines, elimination of cyanide, intramolecular aromatic electrophilic substitution, and water elimination. The Lewis acid generated protic acid is an efficient catalyst. The method features readily accessible starting materials, wide substrate scope, transition-metal-free environment, and regiospecificity in the ring-opening of cyanoepoxides.
Preparation method of indole compounds
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Paragraph 0058, (2019/04/04)
The invention provides a preparation method of indole compounds. 2-cyanoethylene oxide compounds and arylamine react under the catalysis effect of lewis acid (boron trifluoride diethyl etherate or aluminum trichloride) to obtain corresponding indole compo