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Communication | Special issue | Vol 37, No. 1, 1994, pp.149-152
Published online, 1st January, 1970
DOI: 10.3987/COM-93-S7
Indoline Formation by Regioselective Aryl Radical Cyclization to Azomethine Bond

Seiichi Takano,* Mahito Suzuki, and Kunio Ogasawara

*Pharmaceutical Institute, Tohoku University, Aobayama, Sendai 980-8578, Japan


Aryl radical-initiated cyclization of the ketimines derived from acetophenone and benzophenone occurred exclusively at the nitrogen end of the azomethine bond in an exo-5 mode to yield the corresponding indoline derivatives.