Attempts to prepare optically active iodides by nucleophilic displacement on optically active bromides using I- normally produce racemic iodoalkanes. Why are the product iodoalkanes racemic?

Q: A reaction flask contains 2-bromopentane in an ethanolic solution of sodium ethoxide at room…

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Q: What products will be expected if the reaction of pent-3-en-2-one is carried out with excess of…

A: The reaction of the carbonyl compounds with the Grignard's reagent i.e., RMgX (where R is an alkyl…

Q: Explain the following observation. Ethyl 3-phenylpropanoate (C6H5CH2CH2CO2CH2CH3) reacts with…

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Q: 9. Explain the following conversions step by step by writing detailed mechanisms over…

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Q: Compelling evidence for the existence of a tetrahedral intermediate in nucleophilic acyl…

A: The given reaction involves the attack of a hydroxide ion on the ester.

Q: In the reaction of s-2-bromobutane with sodium hydroxide the product will be a racemic mixture?

A: Yes, the reaction of s-2-bromobutane with sodium hydroxide will produce the racemic mixture.

Q: Explain why maleic anhydride reacts rapidly with 1,3-butadiene but does not react at all with ethene…

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Q: Give the reason of the following statements: 1. An achiral starting material in enolate alkylation…

A: Wagner-Meerwein rearrangement is basically the shifting of the alkyl ion of H+ ion to form the most…

Q: Which of the following compounds is much better monohalogenated in the presence of light with…

A: Given statement is :  Options are :

Q: When (ft)-6-bromo-2,6-dimethylnonane is dissolved in CH3OH, nucleophilic substitution yields an…

A: NOTE : there is a typing error in the question  its (6R)-6-bromo-2,6-dimethylnonane  and…

Q: why do (R)-3-chloro-1-methylcycloprop-1-ene and 5-Bromo-1,3-Cyclohexadiene react differently with…

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Q: A B D

A: Correct answer is (A)

Q: Acetoxybenzene (PhOC(=O)OCH3) is much less reactive than ethoxybenzene (PhOCH2CH3) in electrophilic…

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Q: Explain this observation: Ethyl 3-phenylpropanoate (C6H5CH2CH2CO2CH2CH3) reacts with electrophiles…

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Q: Explain the Process of Determining the Mechanism of Nucleophilic Substitution ?

A: In organic chemistry, a kind of chemical reaction where a nucleophile gets bonded to atoms (or)…

Q: Which isomer reacts more rapidly in an E2 reaction: cis-1-bromo-4-tert-butylcyclohexane or trans-1-…

A: E2 elimination reaction : It is a type of elimination reaction that is mostly observed in the case…

Q: 1. CH3M9BR 2. H20

A: The given reactant is a epoxide and the possible site for nucleophilic attack depends on the…

Q: What is the likely mechanism of nucleophilic substitution for attached alkyl halide?

A: Alkyl halides undergo nucleophilic substitution reactions. Nucleophilic substitution reactions are…

Q: 10. What is the configuration of the alkene product formed from the E2 elimination of (2S,3S)-…

A: For E2 elimination reaction, leaving group and proton should be in anti-periplannar arrengment.

Q: there are two benzylic bromides that give (z)-4,6-dimethyl-3-phenyl-3-heptene on E2 elimination.…

A: Both the structures have been drawn below.

Q: Explain the difference in reactivity between CH3OH2 and CH3OH in a nucleophilic substitution…

A: The alcohol contains a two lone pair and therefore, will be reactive for the attack on reagent to…

Q: How does the ratio of substitution product to elimination product formed from the reaction of propyl…

A: Strong base favors elimination product, and a bulky base favours elimination product. A high…

Q: Rank the aryl halides in each group in order of increasing reactivity in nucleophilic aromatic…

A: EXPLANATION: Aromatic compounds undergo nucleophilic substitution reaction when leaving group…

Q: ) Draw all the Kekulé structures of anthracene and phenanthrene.(b) Propose mechanisms for the two…

A: a) All the possible Kekule structures of anthracene are shown below. All the possible Kekule…

Q: Which of these alkenes could NEVER be formed from this electrophile by an E2 mechanism? F3C-

A: For the E2 elimination leaving group (OTf in this case) and H on beta-carbon should be in…

Q: Q. Explain the following observation 1. Aldehyde group (-CHO) act as a meta director and…

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Q: What does Meso-dibromobutante on debromination gives?

A: On the basis of mechanism, there are different types of chemical reactions such as addition…

Q: Rank the aryl halides in each group in order of increasing reactivity in nucleophilic aromatic…

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Q: action of (R)-2-chloro-4-methylhexane with excess Nal in acetone gives racemic 2-iodo-4-…

A: As racemic mixture is formed it means a planar intermediate is formed.

Q: Based on what you know about the relative stabilities of alkyl radicals and benzylicradicals,…

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Q: Rank the aryl halides in each group in order of increasing reactivity in nucleophilic aromatic…

A: The nitro group which is present on the benzene ring is electron withdrawing group, so the incoming…

Q: why do (R)-3-chloro-1-methylcycloprop-1-ene and 5-Bromo-1,3-Cyclohexadiene react differently with…

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Q: rank the aryl halide in order of increasing reactivity in nucleophilic aromatic substitution by an…

A: We know nitro group present in aromatic ring,is an electron withdrawing group.

Q: Friedel–Crafts alkylations can be carried out with carbocations formed from reactions other than the…

A: Benzene reacts with but-2-ene in presence of hydrogen fluoride to form 2-phenyl butane. In the first…

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

A: Reformatsky reaction is  type of organic reaction in which  the condensation of an aldehyde or…

Q: Explain the difference in reactivity between CH3OH2 and CH3OH in a nucleophilic substitution…

A: The alcohol contains a two lone pair and therefore, will be reactive for the attack on reagent to…

Q: Rank the aryl halides in each group in order of increasing reactivity in nucleophilic aromatic…

A: Nucleophilic aromatic substitution (SNar) reaction favors the addition of nucleophile on the…

Q: Question is attached

A: According to Berdt's rule it is observed that a double bond or a charge is highly unstable at bridge…

Q: Give reasons for the following: (i) Benzyl chloride is highly reactive towards the SN1 reaction.…

A: The SN1 is the unimolecular nucleophilic substitution reaction. In this, the rate-determining step…

Q: 16.46 Rank the following compounds in order of increasing reactivity in electrophilic bromination.…

A: Applying inductive, hyperconjugation & mesomeric effect . Mesomeric >hyperconjugation>…

Q: Explain this observation: Ethyl 3-phenylpropanoate(C6H5CH2CH2CO2CH2CH3 ) reacts with electrophiles…

A: The structures of the given molecules are shown below,

Q: Although dehydrohalogenation occurs with anti periplanar geometry,some eliminations have syn…

A: The given chemical reaction is,

Q: What stereochemistry would you expect for the alkene obtained by E2 elimination of…

A: The E2 elimination takes place in most of the cases in anti periplanner orientation . And occurs in…

Q: The existence of the NIH shift was established by determining the major product obtained from…

A: NIH shift- is a chemical rearrangement where a hydrogen atom on an aromatic ring undergoes an…

Q: 2. Name and Draw the structures of Tert-butylbenzen with all possible chemical (Electrophilic…

A: structure of tertiary butyl benzene-   Halogination - bromination- reagents are Br2 , FeBr3, heat

Q: Identify the coupling partners that can be used to prepare the following compounds in a Heck…

A: Heck reaction is a reaction which involves the coupling of an aryl or vinyl halides with an alkene…

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.