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Abstract
The synthesis of new eight‐membered cycle dibenzo[b,f][1,5]‐diazocine‐6‐(5H)‐one derivatives 11, 12 was developed. The key step in this synthesis was the intramolecular cyclization of the amino aldehyde precursors 9,10 obtained by a selective reduction of the nitro benzamides 7, 8.
Acknowledgment
This work was supported by a grant from CEPEDEQ‐Facultad of the Chemical and Pharmaceutical Sciences Faculty, University of Chile, Santiago, Chile.