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Updated: May 24, 2026

Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles
Published on: August 22, 2018
2-Amino-5-methyl-6-methyl-sulfanyl-4-phenyl-benzene-1,3-dicarbonitrile
Abstract:
The dihedral angle between the planes of the two aromatic rings of the title compound, C(16)H(13)N(3)S, is 56.7 (3)°. The crystal packing is stabilized by inter-molecular N-H⋯N hydrogen bonds, which link the mol-ecules into chains along [11[Formula: see text]].
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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.
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Carboxylic acid derivatives contain an acyl group attached to a heteroatom such as chlorine, oxygen, or nitrogen. The carbonyl carbon and oxygen are both sp2-hybridized with an unhybridized p orbital.
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