Why 9(t-butyl) anthracence has a lower quantum yield than 9-methyl anthracence?

Q: What is the thermodynamic product obtained from the addition of 1 equivalent of HBr to…

A: Given reactant is 1,3-butadiene.

Q: Palladium Catalyst Benzene, 25C +

A:

Q: Draw a structural formula for the Diels-Alder adduct formed by reaction of each diene and dienophile…

A: In a chemical reaction; the substance which involves in conversion is said to be reactant whereas…

Q: 2,3-Di-tert-butyl-1,3-butadiene is extremely unreactive in Diels–Alder reactions. Explain.

A: Diels Alder reaction is the reaction between a diene and a dienophile.

Q: Select the two compounds that could be used to make Compound V through a Diels-Alder reaction. CN

A: Answer is attached below :

Q: B. Show the structure of the major and minor products of the following reactions: Cl2 FeCl 1 Br2,…

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Q: why is cyclopentadiene more acidic than cycloheptatriene?

A: cyclopentadiene more acidic than cycloheptatriene it can be explained by aromaticity

Q: What is the purpose of   A Pericyclic Diels-Alder Reaction ?

A: Diels-Alder reaction is a common pericyclic reaction between a conjugated diene and a dienophile,…

Q: What is the predominant form of EDTA at > pH 10.0? y4- HY3- H3Y"

A: The predominant form EDTA at basic condition is given below

Q: Isoprene has sometimes been used as a starting material in the laboratory synthesis of terpenes. In…

A: The given chemical reaction is shown below: Isoprene reacts with 2 mol. of HBr and forms…

Q: Describe various methods for synthesis of cobalt(II) sulphate (CoSO4.7H2O) in detail

A: 1) Cobalt sulphate is prepared from reaction of cobalt metal with sulfuric acid. 2) Cobalt sulphate…

Q: Explain why cyclopentadiene (pKa = 15) is more acidic than pyrrole (pKa ∼17), even though nitrogen…

A: The reason why cyclopentadiene (pKa = 15) is more acidic than pyrrole (pKa ∼17), even though…

Q: In the synthesis of 9,10-dihydroanthracene-9,10-a,ß-succinic anhydride, why was the reaction kept in…

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Q: Water disinfection by halogens may not produce the following by-product: a. Chloramine (NH2CI) b.…

A:

Q: Briefly explain the mechanism of the Duquenois-Levine test a) What is the purpose of the addition of…

A: The Duquenois-Levine Test , also known as the simple Rapid Duquenois Test , is an established…

Q: explain the reaction and mechanism of Diels alder reaction

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Q: Identify each of the following molecules as conjugated or isolated. OCH3 In the addition of HBr to…

A: conjugated system are systems containing delocalised p electrons

Q: MCQ 159: Bromine (Brg) is relcased during reactions A. reddish brown gas B. blue gas C. white gas D.…

A: The question is based on physical properties of gases. We have were to identify the physical…

Q: он он

A: The answer is given as follows

Q: What is the major product of nitration of p-fluoroanisole reactions?

A: Nitration of p-fluoroanisole gives the 4-fluoro-1-methoxy-2-nitrobenzene as a major product. Here…

Q: Using chemical equations, show how can you prepare:                     1- Butanal from…

A: There are number of reagents which are utilized for the oxidation of alcohol (-OH) to carbonyl…

Q: Calculate the % yield if 1.1g of anthracene reacts with 1.17g of maleic anhydride to give 0.8g of…

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Q: The following tests or reagents could differentiate 2,3-dimethylheptane and…

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Q: 5. During the Diels-Alder reaction, you had to remove excess maleic anhydride. Which of the…

A: 5. Vacuum Filteration technique could be used to remove excess of Maleic anhydride if the product…

Q: From the reaction of a hydrocarbon of your choice with hydroxyl radicals, show how NO is oxidised to…

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Q: . If an unknown forms a silver mirror in the Tollens test, forms a purple color in the Schiff test,…

A:

Q: Give an example for each describe the following reactions (i) Hoffmann’s bromide reaction (ii)…

A: a) Hoffmann bromide reaction: CH3CONH2+Br2+4NaOH →CH3NH2+Na2CO3+2NaBr+2H2O This reaction describes,…

Q: A. The acidity of HBr B. The Aufbau principle C. The nucleophilicity of bromide ion D. The relative…

A: The answer lies in the relative stability of the carbocations. The reaction in question is an…

Q: 3-Sulfolene: A butadiene Source for a diels Alde Synthesis. Please be prepared to take a quiz on…

A: Since you have posted a question with multiple subparts, we will solve the first three subparts for…

Q: What color will be produced if cyclohexene and toluene are reacted with sulfuric acid?

A: Alkane doesn't react with sulphuric acid or inert to concentrated sulphuric acid. If I take into…

Q: What type of compound absorbs UV light at (or near) the 254 nm wavelength of the green light? What…

A: Wavelength is defined as a distance between two consecutive crest or two consecutive trough.

Q: Which molecules can function as dienes in Diels-Alder reactions?

A: The given molecule is,

Q: explain why the thiazolium ring is aromatic?

A: Structure of Thiazolium ring =

Q: Explain the following reactions with an example for each :(i) Reimer-Tiemann reaction(ii)…

A: (i) Reimer-Tiemann reaction It is an aromatic substitution reaction used for the ortho-formylation…

Q: Draw structural formulas for the product  of reaction of cyclopentadiene with   dienophile.

A: The structural formula for the product of reaction of cyclopentadiene with the given dienophile has…

Q: 1. What is diazotization? Why are aromatic diazonium salts more stable than aliphatic diazonium…

A: Please find your solution below : 1. The reaction in which primary aromatic amine is converted into…

Q: Why does bromine's color disappear when Br2 is added to an alkene sample?

A: Given : We have to tell bromine color disappear when it is added to alkene.

Q: What are CBS Reagents ?

A: The CBS catalyst or Corey–Bakshi–Shibata catalyst is an asymmetric catalyst derived from proline.

Q: why are dienophiles involved in the diels alder reaction ?

A: Diels-Alder reaction mechanism proceeds through the suprafacial (same-face involvement of the ?…

Q: Which of the following can be used as the required diene in a Diels-Alder reaction? NO2 II IV а. I…

A:

Q: If 1.2g of anthracene (MW= 178.23 g/mol) reacts with 0.66g of maleic anhydride (MW=98.057), what is…

A: Given mass of anthracene, C14H10 = 1.2 g  Molar mass of anthracene= 178.23 g.mol-  Given mass of…

Q: Which of the following reactions is/are consistent with Markovnikov's rule? Br (a) + HBr (b) HBr Br…

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Q: Compare the energies of o complex for nitration reaction of benzene, toluene and nitrobenzene.

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Q: Which of these structures reacts with Br2 in the dark?

A: Dark condition means the bromination can not go via redical mechanism, in dark condition bromination…

Q: Question 12 Which of the following can be used as the required diene in a Diels-Alder reac II III IV…

A: Diels alder reaction takes place between diene and dienophile.

Q: From the four following choices, select the best dienophile for a Diels-Alder reaction.

A:

UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or  ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.