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Updated: May 25, 2026

Modification and Functionalization of the Guanidine Group by Tailor-made Precursors
Published on: April 27, 2017
2-{1-[(2-Nitro-benzene-sulfonamido)-meth-yl]cyclo-hexyl}acetic acid
Abstract:
In the title compound, C(15)H(20)N(2)O(6)S, the C-SO(2)-NH-C torsion angle is 64.54 (14)°. In the mol-ecule, there is a bifurcated N-H⋯(O,O) hydrogen bond, forming S(7) rings. In the crystal, inversion dimers are formed via O-H⋯O hydrogen bonds involving the carboxyl group, so forming R(2) (2)(8) rings. These dimers are further linked via pairs of C-H⋯O hydrogen bonds, forming a C(6) chain propagating along the c-axis direction.
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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.
IUPAC Nomenclature of Carboxylic Acids
For acyclic saturated monocarboxylic acids, the longest hydrocarbon chain containing the –COOH carbon is identified as the parent chain. Then, the last -e of the parent hydrocarbon name is replaced with a suffix -oic acid.
Nomenclature of Carboxylic Acid Derivatives: Acid Halides, Esters, and Acid Anhydrides
The IUPAC and common names of acid halides are derived from the corresponding carboxylic acids, by changing “ic acid” to “yl halide.” For example, as shown below, the IUPAC name ethanoyl chloride is derived from ethanoic acid, and the common name, acetyl chloride, is obtained from acetic acid.
IUPAC Nomenclature of Ketones
Nomenclature of Alkynes
Cycloalkanes
The IUPAC nomenclature of cycloalkanes follows similar rules that apply to...

