Imide

Imide

=Organic chemistry=

In organic chemistry, imide is a functional group consisting of two carbonyl groups bound to nitrogen. Imides are generally prepared directly from ammonia or a primary amine, and either carboxylic acid(s) or acid anhydrides. The structure of the imide moiety is as shown to the left.

s. Some phthalimides have luminescent qualities.

The imide functionality is present in the RNA nucleotide uracil and the DNA nucleotide thymine, and participates in Watson-Crick hydrogen bonding, where the carbonyl oxygens act as hydrogen-bond acceptors and the imide nitrogen acts as a hydrogen-bond donor.

Imides can be prepared in the isoimide-to-imide Mumm rearrangement.

Inorganic chemistry

Imide may also refer to the diatomic ion NH2−, which is a powerful base and will readily abstract two protons from water, yielding the ammonium ion.

External links

* [http://www.chem.qmul.ac.uk/iupac/class/oneN.html#52 IUPAC: imides]


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  • Imide — Imide, während die Amide Verbindungen sind, die man aus den entsprechenden Ammoniaksalzen durch Verlust von 2 Äquivalenten Wasser entstanden betrachten kann; sind die I. Körper, welche aus den Ammoniaksalzen durch Austreten von 3 Äquivalenten… …   Pierer's Universal-Lexikon

  • imide — ● imide nom masculin Nom générique des dérivés de l ammoniac, de formule générale (RCO)2NH, où deux atomes d hydrogène ont été remplacés par des groupes acyles RCO. ⇒IMIDE, subst. masc. CHIM. Substance organique caractérisée par le groupement CO… …   Encyclopédie Universelle

  • imide — IMÍDE s.f.pl. (chim.) Combinaţii organice ciclice care conţin în ciclu grupa = NH. [< fr. imides]. Trimis de LauraGellner, 25.04.2005. Sursa: DN  IMÍDE s. f. pl. combinaţii organice ciclice în care se substituie oxigenul cu radicalul bivalent …   Dicționar Român

  • Imide — Im ide, n. (Chem.) A compound with, or derivative of, the imido group; specif., a compound of one or more acid radicals with the imido group, or with a monamine; hence, also, a derivative of ammonia, in which two atoms of hydrogen have been… …   The Collaborative International Dictionary of English

  • Imīde — Imīde, sekundäre Amide, s. Amide …   Meyers Großes Konversations-Lexikon

  • Imide —   [Kurzwort], Singular Imid das, s, Chemie: 1) Säureimide, chemische Verbindungen, die sich durch den Ersatz zweier Hydroxylgruppen einer mehrbasigen Säure oder je einer Hydroxylgruppe zweier Säuren durch die Imidogruppe, NH , ableiten, z. B.… …   Universal-Lexikon

  • imide — [im′īd΄, im′id] n. [arbitrary alteration of AMIDE] an organic compound having the divalent radical NH combined with two acid radicals …   English World dictionary

  • Imide — En chimie organique, un imide est un amide secondaire cyclique, c est à dire un amide ou un radical ammonium lié à deux groupes carbonyles (R C=O) liés à l atome d azote. Du point de vue de la nomenclature, une structure linéaire de type R CO NH… …   Wikipédia en Français

  • Imide — Allgemeine Struktur der Imide (oben), von N Organylphthalimid (Mitte) als Zwischenprodukt der Gabriel Synthese und von Phthalimid (Mitte). R1 bis R3 sind Wasserstoffatome oder Organyl Reste (Alkyl Reste, Alkenyl Reste, Aryl Reste, Alkylaryl Reste …   Deutsch Wikipedia

  • imide — noun Etymology: International Scientific Vocabulary, alteration of amide Date: 1857 a compound containing the NH group that is derived from ammonia by replacement of two hydrogen atoms by a metal or an equivalent of acid groups compare amide •… …   New Collegiate Dictionary

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