40811-65-2Relevant academic research and scientific papers
Synthesis of (E)-3-Alkylideneindolin-2-ones by an Iron-Catalyzed Aerobic Oxidative Condensation of Csp3–H Bonds of Oxindoles and Benzylamines
Gopalaiah, Kovuru,Tiwari, Ankit
, p. 7229 - 7237 (2020)
A novel synthetic route for the construction of (E)-3-alkylideneindolin-2-ones through iron-catalyzed aerobic oxidative condensation of oxindoles with benzylamines has been developed. This oxidative reaction involves a sequence of C–H activation, amine self-condensation, nucleophilic addition, and C–C double bond formation. The synthetic importance of this protocol has been demonstrated by preparing tyrosine kinase inhibitors, anticonvulsant and antitumor agents, and other valuable 3-alkylideneindolin-2-one derivatives. Key intermediates are isolated and a plausible mechanistic pathway for the reaction has been discussed.
