Spiro compound

Spiro compound

in 1900 Ref|Baeyer. Some spiro compounds exhibit axial chirality. Spiroatoms can be centers of chirality even when they lack the required four different substituents normally observed in chirality. When two rings are identical the priority is determined by a slight modification of the CIP system assigning a higher priority to one ring extension and a lower priority to an extension in the other ring. When rings are dissimilar the regular rules apply.

Spiro forms of lactones and oxazines are frequently used as leuco dyes, frequently displaying chromism - reversible change between their colorless and color form.

External links

* [http://www.chem.qmul.ac.uk/iupac/spiro/sp0n1.html#r1 IUPAC nomenclature 1999]
* [http://mdpi.org/molecules/specialissues/spirocompounds.htm Special Issue on Spiro compounds]

References

* A. Baeyer, "Systematik und Nomenclatur Bicyclischer Kohlenwasserstoffe", Ber. Dtsch. Chem. Ges. 33, 3771-3775 (1900).


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • spiro compound — spiranas statusas T sritis chemija apibrėžtis Junginys, kurio du žiedai turi tik vieną bendrą atomą. atitikmenys: angl. spirane; spiro compound rus. спиран; спирановое соединение ryšiai: sinonimas – spirojunginys …   Chemijos terminų aiškinamasis žodynas

  • spiro compound — noun any polycyclic compound having a single atom (usually carbon) as the only common member of two rings …   Wiktionary

  • Spiro — Spiro(s) or Spyro(s) may refer to: * ARA Spiro (P 43), the corvette of the Argentine Navy named after Samuel Spiro * Spiro Agnew, thirty ninth Vice President of the United States * Spiro compound, a class of organic compound featuring two rings… …   Wikipedia

  • spiro-annulated — adjective Describing two rings that are joined, via a single atom, to form a spiro compound …   Wiktionary

  • spiro- — 1 a combining form meaning respiration, used in the formation of compound words: spirograph. [comb. form of L spirare to breathe] spiro 2 a combining form meaning coil, spiral, used in the formation of compound words: spirochete. [comb. form of L …   Universalium

  • spiro — ˈspī(ˌ)rō adjective Etymology: spir : of or relating to a compound or system that contains two rings having a single atom in common compare spir 2 …   Useful english dictionary

  • spiro atom — noun : an atom (as a carbon atom) that is common to two rings in the molecule of a compound …   Useful english dictionary

  • Molécule spiro — Composé spiro Un composé spiro est une molécule organique bicyclique dont les cycles sont connectés par un unique atome. Les cycles peuvent être de longueur ou de nature identiques ou différentes. L atome de connexion est appelé atome spiro et… …   Wikipédia en Français

  • Composé spiro — Un exemple de composé spiro : la molécule « spiro[5.5]undécane ». Un composé spiro est une molécule organique bicyclique dont les cycles sont connectés par un unique atome. Les cycles peuvent être de longueur ou de nature… …   Wikipédia en Français

  • Alicyclic compound — An alicyclic compound is an organic compound that is both aliphatic and cyclic. They contain one or more all carbon rings which may be either saturated or unsaturated, but do not have aromatic character. [GoldBookRef |title=Alicyclic compounds… …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”