A racemic mixture of 2-methyl-1-phenyl-1-butanone is formed when (R)-2-methyl-1-phenyl-1-butanone is dissolved in an acidic or basic aqueoussolution. Give an example of another ketone that undergoes acid- or base-catalyzed racemization.

Q: Show how to convert racemic ethyl 2-oxocyclopentanecarboxylate to racemic 2-allylcyclopentanone.

A: In the presence of sodium ethoxide and allyl halide, 2-oxocyclopentanecarboxylated is converted to…

Q: The compound obtained by treating propan-1-ol with PCC followed by excess of ethanol in presence of…

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Q: In the acid-catalyzed dehydration of 2-methyl-1-propanol, what carbocation would be formed if a…

A: The hydrocarbons which contain all single covalent bonds with the general formula Cn H2n+2 are…

Q: Acetone reacts with carbohydrates in the presence of an acid catalyst to form products that are…

A: Carbonyl group are protected by using diols functional groups in the presence of acid which results…

Q: The following questions pertain to the esters shown and behavior under conditions of the Claisen…

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Q: In 1887, the Russian chemist Sergei Reformatsky at the University of Kiev dis- covered that…

A: The given reaction is represented as follows:

Q: The following compound may undergo the Dieckmann condensation reaction (an intramolecular Claisen…

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Q: For each of the transformations given below, draw the structures of the named starting material,…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: Give the major organic product(s) that would be expected on reaction of 3-pentanone (shown right)…

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Q: The Claisen condensation converts two molecules of an ester into a B-keto ester. The reaction starts…

A: Base abstracts alpha proton of the ester to produce enolate. Enolate acts as a nucleophile which…

Q: The p-toluenesulfonate derived from (R)-2-octanol and p-toluenesulfonyl chloride was allowed to…

A: (R)-2-octanol and p-toluenesulfonyl chloride reacts to form a torsylate group, as the hydrogen from…

Q: a-Hydroxyketones and a-hydroxyaldehydes are also oxidized by treatment with periodic acid. 1. Н, О…

A: The given aldehyde reacts with water forming aldehyde hydrate as shown below.

Q: Write mechanisms showing the conversion of benzyl chloride to benzyl alcohol by both Sn1 and Sn2…

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Q: The Claisen condensation converts two molecules of an ester into a B-keto ester. The reaction starts…

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Q: Based on their structures and molecular weights, which of the four Claisen condensation products is…

A: In Claisen condensation beta-keto ester is formed while in aldol condensation, the beta-hydroxy…

Q: The following questions concern ethyl (2-oxocyclohexane)carboxylate.(a) Write a chemical equation…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Give the structure of the product formed on reaction of ethyl acetoacetate with each of the…

A: (a) 1-Bromopentane and sodium ethoxide (b) Saponification (basic hydrolysis) and decarboxylation of…

Q: With organolithium and organomagnesium compounds, approach to the carbonyl carbon from the less…

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Q: 1 The reaction of an a-diketone with concentrated sodium or potassium hydroxide to give the salt of…

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Q: Acid anhydrides are often used in place of acid chlorides because a less acidic carboxylic acid, not…

A: The structure of the product is

Q: B. Write the stepwise mechanism for given reactions. i. Conversion of tert-butyl alcohol to…

A: The details solution for this is provided below in attach image.

Q: Pinacol (2,3-dimethyl 2,3-butanediol) gives a mixture of pinacolone (3,3-dimethyl-2-butanone) and…

A: Given: Pinacol (2,3-dimethyl 2,3-butanediol) gives a mixture of pinacolone (3,3-dimethyl-2-butanone)…

Q: What is the mechanism of the acid-catalyzed acetal formation of benzaldehyde in methanol?

A: In this reaction, first the carbonyl group of benzaldehyde will be protonated, which will increase…

Q: With organolithium and organomagnesium compounds, approach to the carbonyl carbon from the less…

A: The Grignard reagent is the organometallic complex. When Alkyl halide reacts with magnesium metal…

Q: Propose a mechanism for base-promoted conversion of the proposed intermediate to sodium…

A: Conversion of an alpha-haloketone to a carboxylic acid promoted by a base, known as Favorskii…

Q: Outline a mechanism for the dehydration of 4-methylcyclohexanol catalyzed by phosphoric acid.

A: To write a mechanism for the dehydration of 4-methylcyclohexanol catalyzed by phosphoric acid.…

Q: Write the preparation of 2,4,4-trimethyl-2-pentenal using 2,2-dimethylpropanal and other necessary…

A: Wittig reaction is one of the common methods in organic chemistry for the formation of carbon-…

Q: With organolithium and organomagnesium compounds, approach to the carbonyl carbon from the less…

A: In the chair conformation of 4-tert-butylcyclohexanone, the methyl anion can attack from either the…

Q: If in the Grignard synthesis of benzoic acid a student determined that his crude product was a…

A: The question is based on concept of solvent extraction. We have to separate the crude mixture into…

Q: The acyl group is a protecting group for amines which can be deprotected by treatment with sodium…

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Q: The following compound may undergo the Dieckmann condensation reaction (an intramolecular Claisen…

A: Detail mechanistic pathway is given below to find out the beta keto ester product

Q: Write 2,2,4-trimethyl-2-pentenal by showing the reaction mechanism using 2,2-dimethylpropanal and…

A: This reaction follows Claisen- Schiwidt Condensation reaction. In this reaction firstly, base can…

Q: When CO2 is bubbled through a solution of benzyl magnesium bromide, and the mixture is then…

A: Grignard reagent react with carbondioxide carboxylic acid formed.

Q: Identify A, B, and C, intermediates in the synthesis of the five-membered ring called an α-…

A: In the synthesis of the five-membered ring alpha-methylene-gamma-butyrolactone , the 3 intermediates…

Q: (a) Write a suitable chemical equation to complete each of the following transformations :(i)…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: Write short notes on the following, mentioning reagents, reaction conditions, products formed,…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: Which of the following acid derivatives can be hydrolyzed in water spontaneously without acid or…

A: Acid derivatives mainly gives Nucleophillic acyl substitution reaction, in which the group attached…

Q: 2-Phenylindole is prepared from the reaction of acetophenone and phenylhydrazine, a method known as…

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Q: Formation of Acetals, the Acetonide of Hydrobenzoin Background The object of the present experiment…

A: Meso-isomer: The meso-isomer has two or more stereocenters having a plane, with the R and S…

Q: Write out the 3-step arrow pushing mechanism showing how methyl2,2-dimethylpropanoateis hydrolyzed…

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Q: The sex pheromone of the common house fly has the molecular formula C23H46.   It can be synthesized…

A: Concept revision: 1. We know hydrogen atom of terminal alkynes is acidic and can be abstracted by…

Q: Carbamate esters are esters that bear a nitrogen group, but in many respects they behave exactly as…

A: The organic syntheses are performed with the help of organic reagents.

Q: Whether the ortho-carboxy substituent acts as an intramolecular general-base catalyst or as an…

A: Intramolecular base catalysis is catalysis where catalyst is a part of the molecule that undergoes…

Q: 4..Provide an alternate synthesis to synthesize each of the products 1-phenyl-1-propanol and…

A: Alcohols we can prepare from alkene by acid catalysed hydration.  Using grignard reagent from…

Aromatic Compounds

Aromatic organic compound or aromatic system is an important class of hydrocarbons under the branch of organic chemistry. Aromatic compounds are also called arenas. The definition of aromatic organic compounds can be stated as a class of organic compounds with a planar cyclic ring of atoms bonded through alternated single and double bonds. Due to these alternating bonds, a peculiar feature termed as ‘resonance’, that is, delocalization of pi electrons or the electrons is shared within the atoms of the ring which are present in the aromatic compounds. The word ‘aromatic’ includes a Greek word ‘aroma’ which means smell, indicating that they were named as such due to the sweet odor they produce. Many well-known flavors such as vanilla, cinnamon, and few scents from flowers are extracted from aromatic compounds. Benzene with chemical formula C6H6 is a very common aromatic compound that contains six atoms of carbon held in the cyclic ring of alternate double bonds. It is also to be noted that not all aromatic compounds contain benzene ring. This can be explained by Huckel’s rule.