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Friedel Crafts acylation of naphthalene depend on type of solvent used?
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∙ 10y ago
Friedel Crafts acylation of naphthalene
Wiki User
∙ 10y ago
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Why is aluminum chloride used in large excess in Friedel-Crafts reactions?
To ensure there's enough of it to allow the reaction to go to completion.
Can benzene be replaced by nitrobenzene in friedel crafts alkylation?
The process would be unfavourable since the nitro (-NO2) group is strongly deactivating and would render the benzene ring in nitrobenzene less susceptible to electrophilic attack.
Definition of an acid not dependent of the solvent?
The most general definition of an acid relies on Lewis acid/base theory, which defines an acid as a substance (usually an atom on a substance) that can accept an electron pair from another group.For example, the proton H+ can accept a lone electron pair from OH- and is therefore an acid by the Lewis definition (it is also a Brønsted-Lowry acid as well). The hydrogens in the hydronium ion, H3O+ (a more accurate representation of the "lone" proton, which chemists often use only for convenience) are also Lewis acids by the same reasoning.Iron(III) chloride, FeCl3, is an example of a Lewis acid that does not fit under the Arrhenius or Brønsted-Lowry definitions - it can accept a lone pair from, say, a chloride ion. This is particularly useful in Friedel-Crafts alkylation and acylation reactions.
What are the names of the space crafts that discovered Saturn?
Saturn was discovered by ancient Greeks and Romans, so sorry no space crafts.
What is the mechanism of para bromoacetanilide reaction?
Glacial acetic acid is a trivial name for water-free (anhydrous) acetic acidAs a general term, a substance is said to be anhydrous if it contains no water.Glacial acetic acid is an excellent polar protic solvent, as noted above. It is frequently used as a solvent for recrystallization to purify organic compounds.Acetic acid is often used as a solvent for reactions involving carbocations, such as Friedel-Crafts alkylation; here acetic acid acts both as a solvent and as a nucleophile to trap the rearranged carbocation.run in a glacial acetic acid in order to dissolve the starting materialsGlacial acetic acid (pure anhydrous acetic acid) is used as the reaction solvent, but it also plays an important role as an acid catalyst. Note that the halogenation reaction requires the reactant ketone be tautomerized to the enol form, which occurs under acid catalysis (base catalysis on the other hand would yield the corresponding enolate anion). So as the Br2 consumes the enol form by reacting with it, more enol will need to be generated and the acetic acid increases the rate at which this happens, thereby accelerating the overall reaction. The tautomerization mechanism involves simply protonation of the carbonyl oxygen of the ketone followed by deprotonation of its alpha carbon (carbon adjacent to the carbonyl carbon), with replacement of the CO double bond with a single bond and the formation of a double bond between the carbonyl carbon and the alpha carbon.
Why are only monosubstitution products obtained in the acylation of the substrate compounds chosen in friedel crafts acylation?
because the group added is a withdrawing group that deactivates the ring
What is the Reaction of cumene and acetyl chloride in the presence of aluminum chloride?
The name of this reaction is Friedel-Crafts acylation. It should have a major product adding a ketone at the para position with regard to the isopropyl of the cumene.
How do we convert benzene into acetophenone?
To synthesize acetophenone from benzene, you just need to add the aldehyde to the benzene ring. This can be done via a Friedel-Crafts acylation. The reagents are an acid chloride (acetyl chloride in this case) and AlCl3 (stoichiometric).
What happen when benzene reacts with ch3cocl in presence oa hydrous alcl3?
This is an example of a Friedel-Crafts acylation. One hydrogen from the benzene is replaced by the acetyl portion of the acetyl chloride and the hydrogen and chloride from the benzene and acetyl chloride respectively combine to form HCl. Please see the link.
What are the catalysts used in friedel-crafts reactions instead of stannic chloride?
aluminum chloride
What is important questions of chemistry part 2 fsc rwp board?
Friedel–Crafts reaction
What is acetylation?
Acylation is a reaction in which an acyl group becomes attached to some structural unit in a molecule. Examples include the Friefel-Crafts acylation adn the conversio of amines to amides.
In Freidal craft reactions what is the role of Lewis acids?
Lewis acids help in the generation of electrophiles in Friedel Crafts reactions.
What has the author C M Jephcott written?
C. M. Jephcott has written: 'Friedel and Crafts' reaction in the pyridine series'
Why is aluminum chloride used in large excess in Friedel-Crafts reactions?
To ensure there's enough of it to allow the reaction to go to completion.
What has the author Chandru K Thadani written?
Chandru K. Thadani has written: 'Friedel-Crafts acylations of polynuclear aromatic hydrocarbons'
What has the author Jacob Meyer Zeavin written?
Jacob Meyer Zeavin has written: 'Preparation of some monoderivatives of benzoic anhydride and their reaction with Friedel-Crafts' synthesis'
