Q: QUESTION 1 Circle the best dienophile CH3
A: In Diels-Alder reaction dienophile is the 2pi system .
Q: What happens to the rate of an SN2 reaction under the following conditions? [RX] is halved, and…
A: Given: [RX] is halved, and [:Nu-] is doubled.
Q: Which of the following carbocations is least likely to rearrange? +) A B D
A: Carbocation rearrangement takes place where there is a chance of transforming a less stable…
Q: Fill in the blanks: Polar mechanism because it stabilizes the solvent favors the SN1
A: SN1 reaction is commonly known as unimolecular nucleophilic substitution reaction , rate of…
Q: The E2 reaction is an example of a dehydrohalogenation reaction. True False
A: Ans Reaction of alkyl halide in the presence of base HX will be loss to produce alkene…
Q: Select the member of each pair that shows the greater rate of SN2 reaction with KI in acetone.
A:
Q: 4. Are there any RX compounds from part A that are not expected to undergo an Sn1 or SN2 reaction?…
A: Note: Chloro benzene, bromo benzene cannot participate in sn1 or sn2 due to unstable carbocation and…
Q: Fill in the appropriate reagent or starting material in each of the attached reaction.
A: The nucleophilic substitution reaction is an organic reaction in which the nucleophile attaches to…
Q: Br Br X
A: SN1 reaction is known as unimolecular nucleophilic substitution reaction. In this reaction rate is…
Q: Which reacts faster in an E2 elimination, cis-or-trans1-bromo-3-tert-butylcyclohexane
A: Biomolecular elimination (E2) reaction:E2 reaction involves a one-step mechanism in which…
Q: What happens to the rate of an SN1 reaction under the following conditions? [RX] is halved, and…
A:
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: 21) Carbocation forms in the reaction of: A) SN1 B) SN2 С) Both D) Cannot determined
A: We have to determine in which reaction carbocation is formed.
Q: %3D arbocations in order of increasing stability (least stal cures may be equal in energy. II IV V
A:
Q: On a single graph, draw the reaction coordinate diagram for the addition of one equivalent of HBr to…
A: Given reactions, (1) Addition of HBr to 2-methyl-1,3-pentadiene: (2) Addition of HBr to…
Q: What happens to the rate of an SN2 reaction under the following conditions? Both [RX] and [:Nu−] are…
A: The rate of SN2 reaction depends upon the concentration of reactant (alkyl halide, RX ) and…
Q: Select the member of each pair that shows the greater rate of SN2 reaction with KI in acetone.
A: The addition of nucleophile and removal leaving group takes place in simultaneously in SN2 reaction…
Q: Which statement(s) is/are true regarding leaving Broups? L Weak bases make good leaving groups. II.…
A: I . ) Good leaving groups are weak bases. They're happy and stable on their own. Some examples of…
Q: In the E2 reaction of 2-bromopentane with sodium tert-butoxide, 1-pentene is favored over 2-…
A:
Q: Good nucleophiles that are weak bases favor substitution overelimination. Explain this ?
A: Good nucleophiles are weak bases which favor substitution often.
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: The SN2 reaction proceeds with 100% inversion of configuration as a consequence of backside attack…
A: SN2 - Nucleophilic substitution bimolecular reaction. In SN2 reaction the rate of the reaction…
Q: raw the major product of the SN2 reaction below ar roduct formation. Remember to consider product st…
A: For the E2 elimination, leaving group and H on beta carbon should be anti-periplanar.
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: Draw the most stable carbocation that can be formed by the compound in Figure 5.
A: A carbocation is for when a carbon atom acquires a positive charge, The shape of a carbocation is…
Q: b. С. + + + a.
A: The reactive intermediate species in which carbon atom forms only three bonds and contains a…
Q: What happens to the rate of an SN1 reaction under the following conditions? [Both [RX] and [:Nu−]…
A: The SN1 reactions stands for unimolecular substitution reactions. This type of reactions follows two…
Q: Rank the following carbocations in order of decreasing stability, putting the most s II Multiple…
A: Stability of carbocation is as 3°>2°>1° We can see that I is a 3° Carbocation as the carbon…
Q: Explain the Stability of Allylic Carbocations ?
A: Carbocations are positively charged, sp2 hybridized trigonal planer structures. They are electron…
Q: How does solvent affect rate of reaction if its increase or decrease in sn1 or sn2
A: In SN1 reactions, there carbocation intermediate so solvents of higher polarity stabilizes these…
Q: Rank the following in order from slowest to fastest rate of reaction in a Diels–Alder reaction with…
A: Introduction: Diels-Alder reaction is a cycloaddition reaction of diene and dienophile to form a…
Q: hy is bromination more selective than chlorination?
A: bromination more selective than chlorination because
Q: Use the Hammond postulate to explain why (CH3)2C = CH2 reacts faster than CH3CH = CH2 in…
A: The addition of HX to the alkene is the type of the electrophilic addition reaction. In this…
Q: Select the member of each pair that shows the greater rate of SN2 reaction with KN3 in acetone.
A: SN2 reaction rate depends upon the steric effect. Higher the steric hindrance, lower would be the…
Q: SN1 is always a competing reaction of E1. True or False?
A: SN1 Reaction: A tertiary alkyl halide substitutes nucleophile by the removal of halogen as leaving…
Q: 8. Rank from best (#1) to worst (#3) substrate in an SN2 reaction and explain. Br Br
A: When an incoming nucleophile attacks the alkyl halide and substitutes the halide ion and the rate of…
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: What happens to the rate of an SN2 reaction under the following conditions? [RX] is halved, and…
A: Nucleophilic substitution bimolecular reaction or the SN2 is a type of reaction in which bonds are…
Q: Among a primary, secondary, or tertiary carbocation, which is most favored for SN1 reactions?…
A: Among a primary, secondary or tertiary carbocation which is most favored for SN1 reactions? Explain…
Q: 3) What is a nucleophile? Provide some examples of nucleophiles that would work well in the SN2…
A:
Q: What happens to the rate of an SN2 reaction under the following conditions? [RX] is tripled, and…
A: The rate of an SN2 reaction under the given condition: [RX] is tripled, and [:Nu−] stays the same.
Q: SN2 mechanism
A: no, polar solvent dissolve the substrate and nucleophile but do not participate in hydrogen bonding…
Q: Which statement is true for S2 reactions? a) Reaction rate depends on stability of carbocation b)…
A: True statement about Sn2 reaction is
Q: The SN1 reaction is a two-step reaction, and the first step of this reaction is the formation of a…
A:
Q: Select the member of each pair that shows the greater rate of SN2 reaction with KN; in acetone. Set…
A: The nucleophilic substitution reaction of the leaving group (which usually consists of halide groups…
Q: The first reaction can lead to over substitution. In the second reaction, no over substitution is…
A: Benzene gives an aromatic electrophilic substitution reaction. The reaction completes in two steps.…
Q: 2. Circle the member of each horizontal pair that undergoes the faster SN2 reaction with Na*N3 in…
A:
Q: 5) Carbocation forms in the reaction of: A) SN1 B) SN2 C) Both D) Cannot determined
A: Given that : We have to identify in which reaction(s) carbocation is formed : A) SN1 B) SN2 C) Both…
Q: 4. Are there any RX compounds from part A that are not expected to undergo an SN1 or Sn2 reaction?…
A: Note: primary alkyl halides prefers sn2 reaction. secondary alkyl halides prefers sn1 or sn2 depends…
Q: Select the member of each pair that shows the greater rate of SN2 reaction with KI in acetone.
A: SOLUTION: Step 1: The given compounds are 1) 2-bromo pentane 2) 2-bromo-3-methylbutane.…
Q: 9.17: select the momber of each pair that shows the grater rate of Sn2 peaction with KI in acetonc.…
A: 9.17 Given pair,
The formation of a carbocation is the rate-determining step for an SN2 reaction.
A. True
B. False
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- What is the major product of the following reaction? A. B. NO₂ NO₂ NO₂ CH3CI, AICI3 C. D. NO₂ NO₂Q1. Which of the following alkyl halides form a substitution product in an SN1 reaction that is different from the substitution product formed in an SN2 reaction? a. CH3 Br I I CH3CHCHCHCH3 CH3 b. CH3 CH3CH₂C-CHCH3 CH3 Br C.+ CH₂Br d. CH3 -BrWhich of the structures is NOT a resonance structure of the following carbocation? A. OB. OC. O D. ∞
- 1. Which of the following is the most reactive to SN₂ A. CH3I ----OH- ---→ CH3OH B. CH3I ----H₂O → CH3OH C. CH3I ----CH3O --→ CH3OCH3 D.CH3I --- CH3OH CH3OCH3 → 2. Which of the following is the most reactive to SN₁ reaction? A. CH3CH₂Br B. Cyclohexybromide C. 2-bromo-2-methlypropane D. 2-bromopropane 3. Which of the following is the expected product for the reaction of tertiarybutylalcohol with hyrochloric acid in the presence of ZnCl₂ as catalyst. B. 2-Chloropropane C. 1-Chloro-2-methylpropane D. 2-Chloro-2- A. Chloroethane methylpropane7. In eight steps or less, convert the given starting materials into the desired products. eight steps or less a. b. Br CI eight steps or less HO, OH6. Fill in the reagents (part b) and draw the product (part a) as each part requires. a. b. N(CH3)2 1. CH₂I 2. Ag20, H₂O NH₂ 1. 2.
- a.which reaction is faster ? b. Complete the enerqy diagram c. labei the diagram by drawing méterials the structures of the Starting b. Но Br Но Br HBr vs. HBr reactionA terminal alkyne (RC=CH) is exposed to excess HBr. What rule should be followed to determine the placement of the halogen atoms in the product? A. Markovnikov rule O B. Hofmann's rule O C. Zaitzev's rule D. Anti-Markovnikov rule.diastereomers .d O ?Which of the following alkylI halides is the most reactive in an SN2 reaction Br .a .b O .c O Br Br .d O
- Identify the missing reagent(s), reactant(s) or final product(s). Some transformations may require more than one step. A. B. C. MeO₂C CO₂Me Br₂, H₂O 70 °C CN CN Br ? Br D. E. in ? ? LIAIHDraw the products obtained from the SN2 reaction of a. 2-bromobutane and methoxide ion. b. (R)-2-bromobutane and methoxide ion. c. (S)-3-chlorohexane and hydroxide ion. d. 3-iodopentane and hydroxide ion.4. Draw all resonance structures for the carbocation formed by ortho attack of the electrophile +NO2 on each starting material. Label any resonance structures that are especially stable or unstable. C(CH3)3 LOH CHO a. b. С.