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Updated: May 27, 2026

Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles
Published on: August 22, 2018
N-Cyclo-propyl-N-[2-(2,4-difluoro-phen-yl)-2-hy-droxy-1-(1H-1,2,4-triazol-1-yl)prop-yl]-2-(5-methyl-2,4-dioxo-1,2,3,4
Abstract:
In the title compound, C(21)H(22)F(2)N(6)O(4)·0.62CH(2)Cl(2), the difluoro-substituted benzene ring forms dihedral angles of 54.6 (3)° with the mean plane of the thymine ring and 50.9 (2)° with the triazole ring. The dihedral angle between the thymine and triazole rings is 7.4 (3)°. In the crystal, inter-molecular N-H⋯N and O-H⋯O hydrogen bonds link the main mol-ecules into chains along [10[Formula: see text]]. The CH(2)Cl(2) solvent mol-ecule was refined as partial occupancy over two sets of sites with refined occupancies of 0.308 (9) and 0.310 (8).
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Nomenclature of Carboxylic Acid Derivatives: Amides and Nitriles
The IUPAC and common names of amides are derived from the parent carboxylic acid, by replacing the suffix “oic acid” and “ic acid,” respectively, with “amide.” In the following example, the IUPAC name ethanamide is derived from ethanoic acid, and the common name, acetamide, is obtained from acetic acid.

