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Updated: Jan 18, 2026

Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles
Published on: August 22, 2018
1-(4,5-Dinitro-10-aza-tricyclo-[6.3.1.0]dodeca-2,4,6-trien-10-yl)-2,2,2-trifluoro-ethanone
1College of Science, Nanjing University of Technolgy, Xinmofan Road No.5, Nanjing 210009, People's Republic of China.
Abstract:
In the title compound, C(13)H(10)F(3)N(3)O(5), a derivative of andrographolide, the five-membered ring adopts an envelope conformation, while the non-planar six-membered ring has a chair conformation. An intra-molecular C-H⋯F hydrogen bond results in the formation of a non-planar six-membered ring adopting a twisted conformation. In the crystal structure, inter-molecular C-H⋯O hydrogen bonds link the mol-ecules into centrosymmetric dimers.
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