Perform a hydride shift to produce a more stable carbocation Show the delocalization of the positive charge of the carbocation Form a conjugated alkene
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Q: Treatment of propadiene (an allene) with hydrogen bromide produces 2-bromopropene as the major…
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Q: 3. Write down the mechanism for the following reaction and predict which of the two possible…
A: Answer: In this reaction electrophilic addition of HBr will take place over alkene. Since, there are…
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Q: This is what CH you want as major product
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Q: Draw a structural formula for the product of each SN1 reaction. Where configuration of the starting…
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Q: Predict the structure of the rearranged carbocation. A) I B) II C) III D) IV
A: The solution is given below -
Q: . Give the mechanism of the following reactions. Make sure to show all electron lone pairs and…
A: In this question we will give step-by-step mechanism by showing all the curved arrows, lone pair and…
Q: Assign E or Z configurations to alkene below. но-
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Q: During the free radical halogenation of 3-ethylhexane, many different hydrogens are removed from the…
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Q: Show the starting diene and dienophile you could use to prepare the following molecule:
A: 1st question Answer is given in below image
Q: SN2 reaction
A: SN2 is the substitution nucleophilic bimolecular mechanism. It is a single step mechanism involving…
Q: What synthetic goal is achieved by subjecting an alkene to an oxymercuration-demercuration reaction…
A: Oxymercuration-Demercuration is one of the common method to introduce H2O in an alkene. The reagent…
Q: Which reagent below would be used to convert the following alkyne to the alkene shown? محمو NaNH2,…
A: -> Alkyne can be reduced to trans alkene in presence of sodium/ liq NH3 .
Q: Carbocations undergo 1,2-methyl shift or 1,2-hydride shift to produce a more stable intermediate.…
A: The mechanism can be shown as:
Q: Indicate which carbocation is the most stable carbocation and which carbocation is the least stable…
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Q: Electrophilic addition to an alkene proceeds via Markovnikov regiochemistry due to the formation of…
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Q: The carbocation below can rearrange to a more stable ion. Propose a structure CH3 CH3CCHCH3 CH3
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Q: Rather then forming a carbocation, the addition of Br2 to an alkene generates a ion.
A: The addition of Br2 to an alkene generates a radical ion.
Q: Show the intermediates and products that result from alkoxymercuration–demercuration of…
A: In the oxymercuration-demercuration reaction, first the alkene attacks on the Hg2+ salt to form…
Q: Each of the carbocations below can form a more stable carbocation through either resonance or…
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Q: b) Use curved arrows to explain the formation of the product. Comment on whether the reaction will…
A: Given:
Q: CH3 CH3ČCHCH3 CH3
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Q: Pent-1,3-diene and HBr will yield O 3-bromo-pent-1-ene O 2-bromo-pent-2,4-diene 1-bromo-pent-2-ene…
A: Pent-1,3-diene and HBr will yield: This is electrophilic addition reaction.
Q: Show the starting diene and dienophile you could use to prepare the following molecule:
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Q: The carbocation below can rearrange to a more stable ion. Propose a structure for the likely…
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Q: Choose the structure that fits the descriptions below from the pool of choices. 1. An isolated…
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Q: Draw a structural formula for the product of each SN1 reaction. Where configuration of the starting…
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Q: Which carbocation is least stable and which is most stable? Which carbocation can't be rearranged…
A: The order of stability of carbocations -3° > 2° > 1° >methyl cation
Q: If 2-fluoropentane could undergo an E1 reaction, would you expect the major product to be the more…
A: Please find below the reaction taking place
Q: Match the following SN1 and E1 reactions to the correct energy diagram. ASsume all reactions will…
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Q: MCPBA and Ag2O with O₂ at 350 °C are two ways of converting O alkyl halides Oalkenes Oethers…
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Q: + 1. Draw line structures of all of the C3H17* carbocations that have the carbon skeleton shown…
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Q: Draw a structural formula for the product of each SN2 reaction. Where configuration of the starting…
A: Given:
Q: Choose the structure that fits the descriptions below from the pool of choices. Use the dropdown…
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Q: Provide a detailed, stepwise mechanism for the following transformation. Use the curved arrow…
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Q: a. CH3CHCH=CH2 d. CH3 ČH3 CH2 CH3 b. e. CH2=CHCCH3 ČH3 c. CH3CHCH2CH=CH2 f. CH3 CH3
A: Applying markonikovs rule to determination of major product.
Q: Draw the approximate energy diagram, annotations, of the rotamers of 2-bromo-3-methyl butane…
A: Let us make the energy diagram. Most stable is anti periplanar with lowest energy and most unstable…
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- Predict the stereochemistry for the following E2 reaction. Draw a Newmann Projection of the reactive conformation and the structure for only major product of the reactionDo hydration reactions like this one have Markovnikov and anti-Markovnikov products? I know that for addition of halides on alkene double bonds, there are Markovnikov products becasue of 1,2-halide/methyl shifts, but there usually aren't shifts in hydration reactions. Essentially, would the Markovnikov/major product for this reaction have a hydroxy group attached to the tertiary carbocation and the anti-Markovnikov/minor product for this reaction have a hydroxy group attached to the adjacent secondary carbocation?addition of hbr to a double bond with an ether (-or) substituent occurs regiospecifically to give a product in which the Br OR are bonded to the same carbon. Draw the two possible carbocation intermediates in this electrophilic addition reaction,and explain using resonance why the observed product is formed.
- Rank the following alkenes in order of increasing stability.If a trans alkene is reacted with OsO4 in H2S, the product is: Meso compound Hoffman product Markovnikov product Racemic mixture When 2-methylpropene is reacted with HCl in ether, the product is: 1-chloro-2-methylpropane 2-chloro-2-methylpropane 2-chloromethylpropene 3-chloro-2-methylpropane Which of the following is not true for the hydroboration reaction of alkenes? Anti-markovnikov Syn addition No incorporation of solvent rearrangements are observedThe bicyclic alkene P can be prepared by thermal electrocyclic ringclosure from cyclodecadiene Q or by photochemical electrocyclic ringclosure from cyclodecadiene R. Draw the structures of Q and R, andindicate the stereochemistry of the process by which each reactionoccurs.
- Which of the following additions to alkenes occur(s) specifically in an anti fashion? I am referring to anti/syn stereochemistry in this question, not the Markovnikov-based regiochemistry. O addition of H2 O halohydrin formation O hydroboration-oxidation O dihydroxylation using OsO4Electrophilic addition to an alkene proceeds via Markovnikov regiochemistry due to the formation of the more stable carbocation intermediate. In the case of conjugated dienes, that is dienes that are separated by one sigma bond, the carbocation that is formed is stabilized additionally by resonance. Addition of the nucleophile to the carbocation intermediate can therefore give two types of products: direct addition to the double bond, also called 1,2-addition, and conjugate addition to the resonance stabilized carbocation, also called 1,4-addition.Allylic carbocation stability is affected by both the nature of the carbocation (primary allylic, secondary allylic, or tertiary allylic) and by the degree of substitution of the double bond. The latter is typically the dominant effect and so a primary allylic carbocation with a trisubstituted double bond is more stable than a tertiary allylic carbocation with a monosubstituted double bond.Electrophilic addition to a conjugated diene is…Addition proceeds preferentially through the most stable carbocation intermediate. At high temperature, 10-20 °C or higher, products equilibrate; and the most stable product predominates (thermodynamic control). At low temperature, 0 °C or lower, there is kinetic control of reaction products. CI CI b Write a mechanism for the first step of this reaction using curved arrows to show electron reorganization. Consult the arrow-pushing instructions for the convention on regiospecific electrophilic attack on a double bond. Arrow-pushing Instructions n →XT H-CI:
- Examine the following pericyclic reactions.Tell whether it is an electrocyclic reaction, a cycloaddition reaction, or a sigmatropic rearrangement.Rank the following alkenes in order of stability.Which of the following is capable of producing longer alkyne products? a Internal alkyne with NaNH2 and Alkyl halides b Terminal alkyne with NaNH2 and Alkyl halides c Internal alkene with NaNH2 and Alkyl halides d Terminal alkene with NaNH2 and Alkyl halides