Q: QUESTION 1 Circle the best dienophile CH3
A: In Diels-Alder reaction dienophile is the 2pi system .
Q: Which of these options rank the following carbocation in order of increasing stability. న కాు O XYZ…
A:
Q: Which of the following alkyl halides will react more quickly in the El reaction (a) (b) (c) (d) to…
A: The compounds given are,
Q: Which is the least stable carbocation?
A: In order to determine the stability of carbocation we have to check following factors sequencly 1)…
Q: 3. For the structures below, either draw the major product as a single stereoisomer, or determine…
A: Diels-Alder reaction : It is a [4+2] cycloaddition reaction betweena diene and a dienophile which…
Q: Which of the following is the most likely structure of the following carbocation after rearrangment…
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Q: Consider the following set of carbocations and answer the questions that follow. A в i. The…
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Q: Which of the following carbocations would NOT be likely to undergo rearrangement? CH3 а. CH,CCH,CH,…
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Q: Which is the most likely rearrangement product of the secondary carbocation?
A: Carbocation: it is carbon ion that bears a positive charge on it. Carbocation stability order:
Q: 5) If the stereochemistry of the starting material of an SN2 reaction is "S", what is the typical…
A: Actually, there is no relation of absolute configuration (R or S) with the SN2 reaction. It means…
Q: %3D arbocations in order of increasing stability (least stal cures may be equal in energy. II IV V
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Q: Which of the following carbocations ( A or B) is more stable? Explain your choice.
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Q: Which of the following carbocations is(are) likely to rearrange? a. I b. II c. III d. II and III…
A: Rearrangement occurs due to increase the stablity of carbocation.
Q: For each pair, select the stronger nucleophile: H20 Но or or II II IV Select one: а. Il and IV b. Il…
A: Nucleophilicity increases as density of negative charge increases. Nucleophilicity is also directly…
Q: Assuming the rings are planar, which ions are aromatic? a. D. b. D:- d.
A: Aromatic compounds are the ones with cyclic planar ring and delocalization of pi electrons and…
Q: II III IV
A: Reactivity of carbocation.
Q: Which of the following ring cyclization reactions would occur at the fastest rate? A /a В в C C D D…
A: Neighbouring group participation (NGP) (also known as anchimeric assistance) in organic chemistry…
Q: Which of the following carbocations is(are) likely to rearrange? CH3 CH3 CH3 CH3 CH3, OCH2 CH3 CH3…
A: Structure is given The carbocation likely to rearrange = ?
Q: CH3 NC. NC A C B
A: In the Diels-alder reaction, the diene and dienophile react with each other to form the new product.…
Q: Which of the following diene should give the most stable carbocation when reacts with HBr? 3 4
A: There are many mechanisms in organic chemistry such as nucleophilic substitution, nucleophilic…
Q: Which of the following carbocations (A or B) is more stable? Explain your choice.
A: The carbocation A and B are stabilizing by the adjacent heteroatoms. Oxygen and nitrogen atoms…
Q: Rank the following radicals in order of decreasing stability. most stable least stable (CHдС-снсн,…
A: Free radicals are electron deficeint. the stability of tertiary radicals is more than that of…
Q: At which of the positions marked would the bromine free radical (atom) react at the fastest rate? 1…
A: The order of the free radical reaction is as follows:
Q: OCH3
A:
Q: In the alkene below, why is HB more easily abstracted by a halogen atom than HẠ ? НА HB A.…
A:
Q: Which one of the alkenes below is not conjugated?
A: Conjugated alkenes are the compounds having double bonds joined by sigma bonds. Conjugated alkenes…
Q: a) Which of the two reactions A and B is very common and of high yield? Why? A B -E -E
A: The reaction drives it self to a particular direction where the complex forms will be most stable…
Q: Which halogen compound in each of the following pairs will react faster in SN2 reaction :(i) CH3Br…
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Q: Consider the following reaction being performed with a low concentration. Think about what type of…
A: The product of the given reaction is
Q: OH OH HCI / ZnCl2 Lucas' Reagent B A
A: ZnCl2 is a lewis acid.
Q: For the following pair of carbocations (A and B), select the one that is more stable and explain…
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Q: Rank the following carbocations in order of decreasing stability. Most stable
A: Carbocations are electron-deficient species that are formed by the removal of a hydrogen atom from…
Q: Br H;C. .CH3 `CH3 H
A: A<C<D<B This the order of decreasing reactivity for E2 elimination
Q: b. С. + + + a.
A: The reactive intermediate species in which carbon atom forms only three bonds and contains a…
Q: Rank the following carbocations in terms of stability from lowest to highest. A C D D<C<B<A B<D<A<C…
A: In this question we have to tell the stability of carbocation in the term of stability.
Q: ?Which of the following statements regarding the Sn1 mechanism is wrong (äbai 2) Reactions by the…
A: We know that SN1 reaction : SN1 is nucleophilic substitution reaction of order 1 i.e.…
Q: 3. Which of the following is most likely to rearrange via 1,2-hydride shift to form a more stable…
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Q: Which of the following statement is correct? A. E2 is a concerted reaction in which bonds break and…
A: The statements given are,
Q: In much the same way that they react with H2, alkenes also react with D2 (deuterium is an isotope of…
A: Given reaction is reduction of alkene .
Q: I II III
A: We have to rank the following given carbanions in order of increasing stability as follows in step…
Q: Which halides are unreactive in a Friedel–Crafts alkylation reaction?
A: The Friedel–Crafts reactions are a set of reactions developed to attach substituents to an aromatic…
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: Match the following SN1 and E1 reactions to the correct energy diagram. ASsume all reactions will…
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Q: Addition of HBr to which of the following alkenes will lead to a rearrangement?
A: Addition of HBr to alkene take place according to the Markovnikov's Rule ( Addition of H+ take place…
Q: Acetoor
A: Nucleophilic Substitution Reaction: In the nucleophilic substitution reaction, one nucleophile…
Q: Which of the following radicals are allylic? B D. only D A, B, and C B and C
A: The radicals given are,
Q: OA. V B. В. V C.
A: Shifting will happens when carbocation will gain stability. A,F,G,H will not not undergoes shifting…
Q: In the elimination of a vicinal dihalide to yield an internal alkyne, two equivalents of NaNH, are…
A: The hydrogen atom bonded to triple bonded carbon atom in alkyne is acidic hydrogen and can be…
Q: Which of the following is (are) correct resonance structrure(s) for the intermediate formed in the…
A:
Q: 3. Each of the following carbocations can rearrange to a more stable ion. Propose structures for the…
A: Carbocation is a species in which carbon carries positive charge.
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- Rank the carbocation compounds below from most stable to least stable.Identify the most stable carbocation and the least stable carbocation out of the carbocations drawn below. Explain why you ranked the most stable carbocation as such. 1 Most Stable = ; Least Stable = III[References) Draw the line-angle formula for the most stable carbocation with a molecular formula of: C3H,+ • You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. • If there are alternative structures, draw the most stable one. P opy aste ChemDoodle
- 2) Rank the following carbocations in order of stability. 1-most stable CH₂ CH CH*1) Which of the following carbocations is more stable? 2) 3) +Arrange the following alkenes in order of increasing stability (least stable to most stable). I3D II IV O IV < III < II < | O II < IV < |I < | O IV < || < |II < | O III < II < | < IV O Il < IV < I < III MacBook Pro
- The reaction shown proceeds via a single transition state with a trigonal bipyramidal geometry. C1 C2 Br: + H3C 0: Two curved arrows are required to indicate all of the bond-making and bond-breaking processes in this reaction. Where should one of the arrows be drawn, if CH3O is the nucleophile? from a Br LP to the O atom from C1 to the O atom from C2 to the O atom from the C-O bond to Br from an O LP to C1 from an O LP to C26) Rank the stability of the following carbocations (1 = most stable) ToQUESTI ON 3 Use Hammond's postulate to determine which alkene in each pair would be expected to form a carbocation faster in an electrophilic addition reaction. Choose the more reactive compound for both pairs. Two answers will be required. or or || IV II IV O000
- Rank the following carbocations according to stability (1: most stable, 5: least stable.)2. Among the three isomeric carbocations given below, JA / B / C] is expected to be the most stable one, and [A / B / C] is expected to be the least stable one. The more substituent attached to the positively charged carbon, the [more / less] electron density shifts toward the positive charge and the more [isomer / inductive / angle / steric / bond] stabilization of the cation occurs. A B[References] The two alkenes below react with HI at different rates. CH3 CH3CH=CHCH3 and CH;ċ=CHCH3 Draw the structural formula of the MAJOR product formed by the alkene having the HIGHER reaction rate. You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. In cases where there is more than one answer, just draw one. C P opy aste Previous Next ChemDoodle®