For 2-methyl - 2-bromobutane which of the following bases is best for an E1 instead of an E2 reaction ? Select one: a. (CH3)3 CO1 b. NONE c. (CH3)2 CHOH d. CH3 O- e. CH3CH2 O-
Q: stion 11 of 11 Draw the most stable form of the major mixed Claisen product formed in the reaction.…
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Q: Which one of the following is the best(faster reaction) nucleophile for the 2-bromobutane SN1…
A: the strength of nucleophile does not affect the reaction rate of SN1 because the nucleophile is not…
Q: 33. Which is a better nucleophile? Cl F or d. b. CH3NH2 or CH;OH СО a. H,S or HS C. CO or NH2 NH2…
A: 33. Better Nucleophile: a. H2S or HS- Answer: HS- Explanation: The conjugate base is always the…
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Q: 6. Which set of reagents would be the best choice to accomplish the transformation shown below? * (1…
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Q: What is the worse base for E2 reaction 2-chloro-2-methylpentane? Select one: a. n-pentoxide b.…
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Q: Which alkyl halide is more reactive in an SN2 reaction with a given nucleophile?
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Q: E) 03 12. Fill in the box with the major organic product of the first step of the reaction shown?…
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Q: Which of the following alkyl halides is most reactive in E1 reactions? CH3 CH3 CH; -CH2-Br CH —С—Br…
A: E1 reactions are the elimination reacgions
Q: What can cause an exception to Zaitsev's rule during E2 dehydrohalogenations? OA steric hindrance O…
A: To identify: What can cause an exception to Zaitsev's rule during E2 dehydrohalogenations.
Q: 40) For a reaction between a thiolate anion and 1-Chloropropane, why is SN2 more favoured than E2…
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Q: True or false 1.Hydroxide is the good leaving group for SN2 reaction. 2.Iodide ion is the better…
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Q: which electrophile is capable of reacting by either an SN1 or SN2 mechanism depending on the type of…
A: Nucleophile: donates pair of electrons to positively charged substrate resulting in the formation of…
Q: at would be the major product in the following reaction? Cl2 -CH,CH,CH3 400 °C ect one: a. -CH;CHCH3…
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Q: Which one of the following is the best(faster reaction) base for the 2-methyl - 2-bromobutane E1…
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Q: Which of the following bases gives the highest Zaitsev product in an E2 reaction with…
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Q: DBU (short for 1,8-Diazabicyclo[5.4.0]undec-7-ene) is what is called a non-nucleophilic base because…
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Q: What set of reagents can best accomplish the following transformation? OH ? A) Cl₂, hv B) Cl₂ in H₂O…
A: The reagent that can be accomplish in the following transformation is:
Q: Why is the alkyl bromide substrate below not capable of undergoing an E2 elimination reaction upon…
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Q: 7. match the alkyl bromide with the corresponding reaction. An alkyl bromide that cannot undergo an…
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Q: Identify the best reagent(s) to perform the following transformation? CEN CH3 O Cro3, H2S04, H20 O…
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Q: Arrange these alkyl iodides according to decreasing rates of their SN 1 reactions. Fastest Slowest…
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Q: Base E2 Br
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Q: The SN2 reaction can be best carried out with A. Primary alkyl halide B. Secondary alkyl halide…
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Q: Which base gives the fastest E1 reaction 2-chloro-2-methylpentane? Select one: a. iso-butoxide b.…
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Q: 1. Consider the following alkyl halides CH3 CH3 CH;CCI or CH;CBr T. ČH3 T. CH3 a. Which alkyl halide…
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Q: Which of the following is the best nucleophile in an SN2 reaction? Group of answer choices H2O…
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Q: Which solvent is more appropriate for the following SN2 reaction, acetic acid or acetone? SH NaSH ?…
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Q: A10. Which of the following statements is true for an E1 reaction? The rate of an E1 elimination…
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Q: H3C H3C Identify the best reagent. 1.H,O* 2. NaBr NaBr HBr (с H ), PBr2 CH3 ОН H3C H3C CH3 Br
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Q: KNH2 + KCI NH3 ČI -30 °C NH2 chloro is only moderately electron-withdrawing traditional SAr…
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Q: What is the best choice of reagent to accomplish the following transformation: HO. O H20, Br2 (1]…
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Q: Which one of the following is the best(faster reaction) nucleophile for the 2-bromobutane SN2…
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Q: Which reacts the most rapidly in a nucleophilic substiution reaction? a. 2-Iodo-2-methylpropane…
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For 2-methyl - 2-bromobutane which of the following bases is best for an E1 instead of an E2 reaction ?
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- The best reagents to carry out the reaction at right would be: a. CH₂ Hg(OAch H₂O NaBH4 KOII in CHCI. 2. Zn. II.O BH, THF H₂O₂, NaOH, H₂O CH₂ a™ OHF3C + CI OH CH3 N. CH3 KOH DMSO CH3 F3C Loss Tox H H F3C (Fluoxetine) CH3 CH3 H a. The rate of the reaction depends on both phenol and alkyl chloride. Is this an SN1 or an SN2 reaction? Draw the reaction mechanism below. Page 6 of 7 b. The physiologically active enantiomer of fluoxetine has (S) stereochemistry. Based on your answer in part (a), draw the correct stereochemistry of the alkyl chloride needed to produce this physiologically active (S)-FluoxetineWhich one of the following is the best(faster reaction) base for the 2-methyl - 2-bromobutane E1 reaction ? Select one: O a. NONE O b. CH3 OH O C. (CH3)3 COH O d. CH3CH2 OH O e. (CH3)2 СНОН
- Identify the correct reagents and conditions to perform this chemoselective reaction: H ရှုံး H Select one: Me e. Reagent(s) and conditions? a. NaBH4 b. BH3 THF Pd/BaSO4, H₂ (1 atm.), quinoline, Pb(OAC)2, MeOH d. Pd/C, H2 (1 atm.), MeOH DIBAL Me H H OHWhich of the following alkyl halides is most reactive in E1 reactions? CH3 II CH3 CH; -CH2-Br CH —С—Br ČH3 CH —CH—Вr Select one: A. II B. II С. IWhich of the following substrates will undergo an SN2 reaction most rapidly ? CH3 II CH3 II CHя — CH —Br CH;-C-Br ČH3 CH;-CH-Br Select one: А. I B. II C. I D. In SN2 reactions, I, II, and II are equally reactive.
- Identify the best reagent(s) for this reaction. (CH3)2CHCH₂CECH Oc) K₂Cr₂O7, H* a) H₂SO4, HgSO4, H₂O Ob) 1. Disiamylborane, 2. HO, H₂O₂ d) NaOCI ? O e) H₂, Pd (CH3)₂CHCH₂CCH3Choose the best reagents to complete the following reaction. 1. DIBAL-H, -78 °C 2. H₂O ด 'H 1. LIAI(OR)3H, -78 °C A 2. H2O 1. excess LiAlH4 B 2. H₂O 1. DIBAL-H, -78 °C с 2. H₂O 1. NaBH4 D 2. H₂O Ш 1. NaCNBH3 2. H₂OIdentify the best reagents to complete the following reaction. 1. NaOH A 2. CH3CH2CH2NH2 1. HCI В 2. CH3CH2CH2NH2 ОН CH3CH2CH2NH2 C 1. SOCI2 D 2. CH3CH2CH2NH2 1. CH3CH2CH2NH2 E 2. SOCI2 NH,
- hich aryl hallde shown below reacts the fastest with sodlum ethoxlide (NaOEt)? Click on a letter A through D to answer. A. OMe С. NO2 B. MeO D. O2NThe following compounds are treated with HNO3/H2SO4. Predict the positions of electrophilic attack that lead to the major nitration product(s). (Enter each possible nitration position as an alphabetical letter string without commas or spaces, i.e. ab or abd. Enter the string in alphabetical order.) H3C. b 1. a Br OH 2. CENWhich is the best procedure for the following preparation? Select one: a. b. C. d. || -CH CH₂MgBr H₂SO4 Ag(NH3)2 NH3H2O NaBH4 H₂O LiAlH4 H2O K₂Cr₂O7 H₂SO4 CH3MgBr H₂SO4 HC1 Mg ether HBr Mg ether O || -CH₂CH NaBH4 H₂O H₂CO CO₂ H3O+ PCC