488828-89-3Relevant articles and documents
Catalyst-free and selective trifluoromethylative cyclization of acryloanilides using PhICF3Cl
Guo, Jia,Xu, Cong,Wang, Ling,Huang, Wanqiao,Wang, Mang
, p. 4593 - 4599 (2019)
Trifluoromethylation-triggered cyclization of alkenes provides a useful route to CF3-containing cyclic compounds. Current approaches to generate CF3-based initiators from a CF3 source require a catalyst or an activator. This work describes a catalyst-free protocol to innately produce electrophilic CF3 species from PhICF3Cl for trifluoromethylative cyclization of acryloanilides. A new domino biscyclization of dienes has been developed leading to trifluoroethylated tetrahydroindenoquinolinones with chemo- and stereo-selectivity.
Palladium-catalyzed cascade reactions of alkene-tethered carbamoyl chlorides with: N-tosyl hydrazones: Synthesis of alkene-functionalized oxindoles
Sun, Wan,Chen, Chen,Qi, Yuan,Zhao, Jinghui,Bao, Yinwei,Zhu, Bolin
supporting information, p. 8358 - 8363 (2019/09/30)
A palladium-catalyzed cascade reaction of alkene-tethered carbamoyl chlorides with N-tosyl hydrazones is described. It provided a new way to synthesize various alkene-functionalized oxindoles bearing an all-carbon quaternary center. The olefin moieties co
Iron-Promoted Construction of Indoles via Intramolecular Oxidative C-N Coupling of 2-Alkenylanilines Using Persulfate
Li, Yudong,Li, Yuehui,Luo, Shuping,Wang, Menglan,Wu, Qing-An
supporting information, p. 3085 - 3090 (2019/08/07)
Indole scaffold synthesis relies primarily on oxidative C-H amination of N-protected alkenylanilines for C-N intramolecular cyclization reactions. Herein, for the first time, without N-protection, various readily prepared 2-alkenylanilines were transformed into the desired indole products in good yields by using K 2 S 2 O 8 as oxidant in the presence of catalytic amounts of FeF 2. The K 2 S 2 O 8 /FeF 2 system offers a direct and benign synthetic route to 3-arylindoles and it is applicable to a wide range of substituted indoles including drug intermediates.