-ene - definição. O que é -ene. Significado, conceito
Diclib.com
Dicionário ChatGPT
Digite uma palavra ou frase em qualquer idioma 👆
Idioma:

Tradução e análise de palavras por inteligência artificial ChatGPT

Nesta página você pode obter uma análise detalhada de uma palavra ou frase, produzida usando a melhor tecnologia de inteligência artificial até o momento:

  • como a palavra é usada
  • frequência de uso
  • é usado com mais frequência na fala oral ou escrita
  • opções de tradução de palavras
  • exemplos de uso (várias frases com tradução)
  • etimologia

O que (quem) é -ene - definição

SUFFIX USED IN ORGANIC CHEMISTRY

-ene         
¦ suffix
1. denoting an inhabitant: Nazarene.
2. Chemistry forming names of unsaturated hydrocarbons containing a double bond: benzene.
Origin
from Gk -enos.
-ene         
The suffix -ene is used in organic chemistry to form names of organic compounds where the -C=C- group has been attributed the highest priority according to the rules of organic nomenclature. Sometimes a number between hyphens is inserted before it to say that the double bond is between that atom and the atom with the next number up.
Ene reaction         
  •  Figure 10. Lewis acid catalyzed, directed carbonyl-ene reaction.
  • Figure 11: Mechanisms of Lewis acid-catalyzed ene reactions
  • Figure 12: Asymmetric glyoxylate-ene reaction catalyzed by a chiral titanium complex
  •  Figure 15. C2-symmetric Cu(II) catalysts developed for the enantioselective carbonyl-ene reactions of olefins and ethyl glyoxylate
  • Figure 19: Structure of (+)-azaspiracid-1 and the ene reaction used to introduce the C17 stereocenter
  • Figure 2. Concerted mechanism for the ene reaction
  • Figure 4. Chair-like transition state proposed for Lewis-acid catalyzed carbonyl-ene additions
  • Figure 5: Stepwise, free-radical pathway for the ene reaction
  •  Figure 6. Endo preference for the ene reaction
  • Figure 7: Types of intramolecular ene reactions.
  • Figure 8: Improvements brought to the ene reaction by Lewis acid catalysis
  • Figure 9: Me<sub>2</sub>AlCl-catalyzed carbonyl-ene reactions
  • Figure 13. Transition state proposed for the reaction in Figure 12.
  • Figure 14: Retrosynthetic analysis of the C3-C16 fragment of laulimalide and use of the ene reaction in its synthesis
  •  Figure 16. Scope of the reaction catalyzed by C2-symmetric Cu(II) chiral Lewis acids
  •  Figure 17. Square planar and tetrahedral Cu (II) stereochemical models.
  •  Figure 18. Derivatization of the alcohols afforded by C2-symmetric Cu(II) chiral Lewis acids.
  • Figure 3. DFT study (B1B95/6-31G*) of a thermal intramolecular carbonyl–ene reaction and its use in the synthesis of jatropha-5,12-dienes
CHEMICAL REACTION
Carbonyl-ene reaction; Alder ene reaction; Conia reaction; Carbonyl-ene-reaction; Alder ene; Alder-ene reaction
The ene reaction (also known as the Alder-ene reaction by its discoverer Kurt Alder in 1943) is a chemical reaction between an alkene with an allylic hydrogen (the ene) and a compound containing a multiple bond (the enophile), in order to form a new σ-bond with migration of the ene double bond and 1,5 hydrogen shift. The product is a substituted alkene with the double bond shifted to the allylic position.

Wikipédia

-ene

The suffix -ene is used in organic chemistry to form names of organic compounds where the -C=C- group has been attributed the highest priority according to the rules of organic nomenclature. Sometimes a number between hyphens is inserted before it to say that the double bond is between that atom and the atom with the next number up. This suffix comes from the end of the word ethylene, which is the simplest alkene. The final "-e" disappears if it comes before by a suffix that starts with a vowel, e.g. "-enal", which is a compound that contains both a -C=C- bond and an aldehyde functional group. If the other suffix starts with a consonant or "y", the final "-e" remains, e.g. "-enediyne" (which has the "-ene" suffix and also the "-yne" suffix, for a compound with a double bond and two triple bonds.)

A Greek number prefix before the "-ene" indicates how many double bonds there are in the compound, e.g. butadiene.

The suffix "-ene" is also used in inorganic chemistry to indicate a one-atom thick two-dimensional layer of atoms, as in graphene, silicene, stanene, borophene, xenzophene, and germanene.

Exemplos do corpo de texto para -ene
1. The clash occurred near the Apurimac and Ene valleys, which are important coca–growing regions.
2. John Ene, Lagos, Nigeria The Kenyan Wildlife Society should buy live porcupines captured by villagers at rewarding prices.
3. Ene Palmiste, a manager at Tallinn–based travel agent Travel Experts, reacted with dismay to the moves.
4. These are Liberals Ionut Popescu, Minister of Public Finance, Mircea Cinteza, Minister of Health, and Democrats Ene Dinga, Minister
5. Ziua headlines÷ "IMF out trying," carrying a statement by European Integration Minister Ene Dinga that the IMF experts have a limited vision.