31912-02-4Relevant articles and documents
Synthesis of pyrazolo[1,5- c] quinazoline derivatives through the copper-catalyzed domino reaction of o -alkenyl aromatic isocyanides with diazo compounds
Li, Lei,Liu, Lu,Mao, Shukuan,Wang, He,Wang, Xin,Zhao, Yu-Long,Zhou, Ming-Dong
, p. 7665 - 7668 (2020)
A novel copper-catalyzed domino reaction between o-alkenyl aromatic isocyanides and diazo compounds has been developed under mild reaction conditions. Various o-alkenyl aromatic isocyanides were prepared from readily available reactants. The reaction prov
Bisannulation of 2,3-dichloro-1,4-naphthoquinone with o-nitrophenylacetic acid derivatives: A succinct synthesis of the ABCD ring system of alpkinidine
Buccini, Marco,Jeow, Shi Yuan,Byrne, Lindsay,Skelton, Brian W.,Nguyen, Tuan Minh,Chai, Christina L. L.,Piggott, Matthew J.
, p. 3232 - 3240 (2013)
Three bisannulation strategies have been used to rapidly construct pentacyclic benzo-fused pyrrolo[4,3,2-mn]acridines, similar to several biologically active natural products. The key steps involve Michael substitution of 2,3-dichloro-1,4-naphthoquinone w
Trifluoromethylation/Difluoromethylation-Initiated Radical Cyclization of o-Alkenyl Aromatic Isocyanides for Direct Construction of 4-Cyano-2-Trifluoromethyl/Difluoromethyl-Containing Quinolines
Li, Lei,Liu, Lu,Mao, Shukuan,Wang, He,Wang, Xin,Zhou, Ming-Dong
supporting information, (2020/05/25)
In this study, a radical-triggered cyclization of o-alkenyl aromatic isocyanides prepared from accessible starting materials is developed. The reaction provides a general and efficient method for the synthesis of 4-CN-2-CF3/CF2H-cont
Method for preparing indole and derivatives thereof
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Paragraph 0077-0081, (2017/08/24)
The invention discloses a method for preparing indole and derivatives of indole. The method for preparing indole and the derivatives of indole is characterized by comprising the following two steps that (1) a catalyst, a ligand and alkali are added in a reaction tube, under the protection of nitrogen, beta-hydroxy ketone or ester is reacted with a mixed solution of o-nitro aryl halides for 3 to 8h in an oil bath pan at the temperature of 90 to 120 DEG C, and then cooled to room temperature after reaction, and extracted, washed, dried and subjected to chromatography to obtain a product of o-nitro alpha-aryl ketone or ester; (2) o-nitro alpha-aryl ketone or ester obtained in the step (1), a reducing agent system and a solvent are added to the reaction tube, and reacted for 3 to 8h at the temperature of 60 to 100 DEG C, and then extracted, washed, dried and subjected to chromatography after being reacted to obtain a target product of indole and the derivatives of indole. Reaction raw materials, the catalyst, the ligand, the alkali and the solvent used in the invention are all industrial commodities, and simple and readily available, wide in sources, cheap in price, and further very stable in performances, and with no need for special storage conditions; in addition, the method for preparing indole and the derivatives of indole disclosed by the invention has the characteristics of low cost, high yield, simple process, less pollution and the like.