Annulation
In organic chemistry annulation (from the Latin anellus for "little ring"; occasionally annelation) is a chemical reaction in which a new ring is constructed on a molecule. Examples are the Robinson annulation, Danheiser annulation and certain cycloadditions. Annular molecules are constructed from side-on condensed cyclic segments, for example helicenes and acenes. In transannulation a bicyclic molecule is created by intramolecular carbon-carbon bond formation in a large monocyclic ring. An example is the samarium(II) iodide induced ketone - alkene cyclization of 5-methylenecyclooctanone which proceeds through a ketyl intermediate:
1,2,3-Benzothiadiazole2,1,3-Benzothiadiazole2,5-DiketopiperazineAceneActivation of cyclopropanes by transition metalsAlkyne trimerisationAnnelationAnnulateAnnulatedAnnulusAromaticityAtraneAtsuhiro OsukaAza-Cope rearrangementAzuleneBamford–Stevens reactionBase-promoted epoxide isomerizationBenzannulatedBenzannulationBenzocyclobuteneBenzothiazoleBiphenyleneBuchner ring expansionCapnelleneCirculeneCombes quinoline synthesisConrad–Limpach synthesisCorannuleneCyclic compoundCyclodecapentaeneCyclododecatrieneCylindrocyclophanesCylindrospermopsinDanheiser annulationDanheiser benzannulationDewar benzeneDibenzopentaleneDodecahedraneDolomedes tenebrosusEllinoceras
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Annulation
In organic chemistry annulation (from the Latin anellus for "little ring"; occasionally annelation) is a chemical reaction in which a new ring is constructed on a molecule. Examples are the Robinson annulation, Danheiser annulation and certain cycloadditions. Annular molecules are constructed from side-on condensed cyclic segments, for example helicenes and acenes. In transannulation a bicyclic molecule is created by intramolecular carbon-carbon bond formation in a large monocyclic ring. An example is the samarium(II) iodide induced ketone - alkene cyclization of 5-methylenecyclooctanone which proceeds through a ketyl intermediate:
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Anelação (derivado de anelar o ...... na formação de outra molécula.
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Een anellering is een reactie ...... paalde pericyclische reacties.
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In organic chemistry annulatio ...... through a ketyl intermediate:
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Une réaction d'annélation (par ...... via un intermédiaire cétyle :
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Анелювання (рос. aннелирование ...... або ангулярним (пiд кутом, b):
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Аннелирование (от лат. anellus ...... ользование термина annelation.
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تفاعل التحلّق في الكيمياء العض ...... و بعض تفاعلات الإضافة الحلقية.
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Anelação (derivado de anelar o ...... na formação de outra molécula.
@pt
Een anellering is een reactie ...... paalde pericyclische reacties.
@nl
In organic chemistry annulatio ...... through a ketyl intermediate:
@en
Une réaction d'annélation (par ...... on de deux nouvelles liaisons.
@fr
Анелювання (рос. aннелирование ...... або ангулярним (пiд кутом, b):
@uk
Аннелирование (от лат. anellus ...... ользование термина annelation.
@ru
تفاعل التحلّق في الكيمياء العض ...... و بعض تفاعلات الإضافة الحلقية.
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Anelação
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Anellering
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Anellierung
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Annulation
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Réaction d'annélation
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Анелювання
@uk
Аннелирование
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تفاعل تحلق
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