Illustrate the effects of conjugation on the location of the carbonylabsorption in some representative compounds ?

Q: In Synthesis of Diben zalacetone, why does the reaction end up being fully conjugated at the…

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Q: When a dilute solution of acetaldehyde in D2O containing NaOD is shaken, explain why the methyl…

A: The reason why methyl hydrogens are exchanged with deuterium but the hydrogen attached to the…

Q: Draw a detailed, arrow-pushing mechanism for the conversion of benzoic acid to methyl benzoate under…

A: We have reaction of benzoic acid and methanol to form the methyl benzoate in acidic conditions. We…

Q: Sulfonation of benzene is a reversible reaction. Using the principal of microscopic reversibility,…

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Q: c) Illustrate a step-wise mechanism for the formation of compound X that comes from compound A.

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Q: Give the reason(s) of the following statements: t-Butyl > isopropyl > ethyl > methyl for relative…

A: 1. In the Wagner-Meerwein rearrangement, a carbocation intermediate is formed, the group adjacent to…

Q: Friedel-Crafts acylation formed by attack at the meta positions of Nitrobenzene. (-NH2 and-OH) act…

A: In the Friedel-crafts acylation reaction, the electrophile is (RCO)+ that attacks the benzene ring…

Q: Show the degrees of unsaturation of xanthine.

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Q: What order do you expect the compounds to elute off the column in? Explain why.…

A: In column chromatography, the non-polar molecule elutes first then the polar molecule because the…

Q: What is the importance of selective functionalism of heterocycles?

A: Heterocyclic chemistry is the branch of organic chemistry related with synthesis, properties and…

Q: What alkene would give only a ketone with three carbons as a product of oxidative cleavage?

A: The oxidative cleavage of an alkene gives carbonyl compounds as product depending upon the reagent.…

Q: Explain the regiochemistry of the Friedel-Crafts alkylation of 1,4-dimethoxybenzene. There are three…

A: Methoxy group is a good ortho-para directing for incoming electrophile, because it increases…

Q: State the effect of substituents on a benzene derivative towards further aromatic substitution

A: The effects of substituents on a benzene derivative towards further aromatic substitution:…

Q: Compound W shows stereoisomerism.  Why are such isomers formed in approximately equimolar…

A: The compound W show racemization. In racemization,optically active compound which contain only one…

Q: How may methyl bromide be preferentially converted to methyl isocyanide?

A: Given: Conversion of methyl bromide to methyl isocyanide

Q: PRovide the products (with appropriate sterochemistry when necessary) for the reaction

A: This is an example of condensation reaction where two alcohol molecule react to form ether via the…

Q: Rank the following compounds in order of increasing reactivity in electrophilic aromatic…

A: Substitution reaction is defined as the reaction in which the displacement of one group by another…

Q: A strong acid is used to catalyze this Fischer Esterification of acetic acid. What two steps in this…

A: The two steps in this reaction which are accelerated by the presence of strong acid has to be…

Q: Would you expect a change in the frequency for the ester stretch between starting material and…

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Q: Select the member of each pair that undergoes SN1 solvolysis in aqueous ethanol more rapidly

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Q: Provide answer to the attached

A: Applying concept of SN2 mechanism.

Q: provide the (S) configuration reaction mechanism for the synthesis of camphor from isoborneol

A: camphor:  .  It is a terpenoid .  Molecular formula C10 H16O  Oxidation of isoborneol in presence of…

Q: Asssign R and s configuration to naproxen. What are the percentage of R and S in the mixture

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Q: most of the additions of bromine to double bonds gave entirely antistereochemistry. Explain why the…

A: Additions of bromine to double bonds: In most cases, the additions of bromine to double bonds gave…

Q: Explain the Opening of an unsymmetrical epoxide ring with HCl ?

A: The first step of the reaction is ,    protonation of epoxide. The next step is ,     the…

Q: What is the arrow pushing mechanism for a Wagner-Meerwein rearrangement of Camphene?

A: In Wagner meerwein rearrangement carbocation intermediate is formed.

Q: How is the small amount of ortho isomer removed from the reaction mixture?

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Q: Explain and illustrate, why it is difficult to perfom Friedel-Craft reactions on the unactivated…

A: Friedel Craft reactions are the reactions which attaches the substituents to an aromatic ring. It…

Q: What alkenes would give only an aldehyde with four carbons as a product of oxidative cleavage?

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Q: The byproduct of the photo dimerization of benzophenone to benzopinacol is?

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Q: Explain why the hydrogen and the methyl substituent are trans to one another after photochemical…

A: 7-dehydrocholesterol is a cholesterol precursor and is converted into Vitamin D3 under photochemical…

Q: What kind of a mechanism is it in the last step of lumefantrin-synthesis?

A: Lumefantrine:  lumefantrine inhibits the formation of β-hematin by forming a complex with hemin and…

Q: Explain the benzyne mechanism.

A: Benzyne is an reaction intermediate which will formed by reaction of halobenzene with strong base at…

Q: Which pair(s) can be separated by chemically active extraction? |-CH3CH2NH2 and C,H5NH2…

A: The pairs of organic compounds given are I. CH3CH2NH2 and C6H5NH2 II. (CH3CH2)3N and CH3CH2NH2  III.…

Q: What do you mean by Enantioselective hydrogenation ? Why it is used ?

A: Enantioselective is also known as asymmetric, and Enantioselective hydrogenation is the…

Q: Give Details of the Hofmann Elimination ?

A: The reaction in which removal of a functional or leaving group takes place in the presence of any…

Q: Select the member of each pair that undergoes SN1 solvolysis in aqueous ethanol more rapidly

A: SN1 reactions are the unimolecular nucleophilic substitution reaction in which the rate of the…

Q: Explain the mechanism for Friedel–Crafts Alkylation Involving Carbocation Rearrangement ?

A: The Freidel crafts alkylation is generally depicted as:

Q: Provide a full mechanism for the diazotisation of aniline.

A: In this question, we will write a complete mechanism of the formation of Diazonium salt from Aniline…

Q: Why does polysubstitution frequently occur with friedel crafts alkylation but not with friedel…

A: Polysubstitution frequently occur with Friedel-Crafts alkylation but not with Friedel-Crafts…

Q: Thiatriazoles, when heated de-compose vigorously. Why is this?

A: On heating thiatriazoles decomposes to form nitogen gas and isothiocyanate. Because nitrogen is a…

Q: Define Hofmann Elimination ?

A: In Hofmann elimination reaction, quaternary amine is treated with excess of methyl iodide and…

Q: Draw the mechanism of the bromination of propene in the presence of water via bromohydrin formation.

A: Mechanism is given below.

Q: Explain Briefly: How many constitutional isomers are obtained when 2,2-Dimethylbutane undergoes…

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Q: Explain 'Conrotatory' and 'Disrotatory' processes in relation to opening of cyclobutane ring

A: Cyclobutane ring opening leads to the formation of two new π- bonds at the expense of one σ-bond. In…

NMR Spectroscopy

NMR stands for Nuclear Magnetic Resonance in which the study of different molecules is done based on the interaction of radiofrequency electromagnetic radiations with the nuclei of molecules placed in a strong magnetic field. A precise study of spectra of visible light and all bands of electromagnetic radiation is called spectroscopy.