None Two cycloaddition reactions (I and II) are shown below. Which of the options given belowbest describes reactions I and II?CNI)CNCNII)CNCNCNCN"CNA. Reaction I is allowed and has a Huckel transition state; Reaction II is forbidden and has aMobius transition state.B. Reaction I is allowed and has a Mobius transition state. Reaction II is forbidden and has aHuckel transition state.C. Reaction I is forbidden and has a Huckel transition state. Reaction II is allowed and has aMobius transition state.D. Reaction I is forbidden and has a Mobius transition state. Reaction II is allowed and has aHuckel transition state.Option AOption BO Option CO Option D

The question is asking us to determine the nature of two cycloaddition reactions, specifically…

Answered: Two cycloaddition reactions (I and II)…

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter14: Elimination

Section: Chapter Questions

Problem 46CTQ

See similar textbooks

Similar questions

2. a. b. d. C. oFor each reaction, draw the product(s) and circle the mechanism(s). Include "major be and “minor" when necessary. Stereochemistry must be included for stereoselective reaction "No reaction" is a possible answer. Br Br ts Br CI ta ха но Br CH3ONa CH₂OH KSH acetone Br₂ hv CH3OH NaCN DMSO ser nongaholds zid) no baard E2 E1 SN1 SN2 X. E2 E1 SN1 SN2 X. E2 E1 SN1 SN2 X. E2 E1 SN1 SN2 X• E2 E1 SN1 SN2 X• E2 E1 SN1 SN2 X.
7. Predict the substitution product. Basically, decide if it's going through an Syl or Sy2 mechanism, then predict. SH Он он and Он SH NaOH or NaSH or SH only racemic racemic NaOCH3 Насо. Br NaOCH3 OCH3 via SN1 or SN2? Br- via SN1 or SN2?
b) Which of the flowing reactions will have the faster rate and give a better yield? Use drawings of the transition state (show orbitals!) to explain why. Br NaOCH3 CH3OH Br NaOCH3 CH3OH
Determine the mechanism of nucleophilic substitution of each reaction and draw the products, including stereochemistr CH₂CH3 CI Br + CN d. + CH3COOH a. acetone + -OCH3 e. DMF f. b. C. ||||| a ||||| Br H Br CH2CH2CH3 + CH3OH DMSO H CH3 CI Br + OCH₂CH3 + CH3CH₂OH
Q3. Please provide a curved arrow mechanism that can explain the reaction shown below. i) LDA ii) aq. workup Me Me TBSO CI Q4. a) Identify the main products of the following cycloaddition reactions. In each case, provide a curved arrow mechanism that accounts for their formation. Me OH H Me b) Provide a clear drawing that explains the stereochemistry of the product.
Use the E2 mechanism to explain why when I is mixed with sodium ethoxide (NaOEt) in ethanol, the major product is III, but when II is mixed with sodium ethoxide in ethanol, the major product is IV. H3C CH3 H3C CH3 ..CI CI CH3 I CH3 || H3C. CH3 H3C CH3 E ||| CH3 CH3 IV SAN
Question 8 Sch Home Profession Enroll Enrett 12 pts To preview image click here The purpose of this question is to determine whether the provided product is allowed or forbidden. You will be asked about the product that is provided, understanding that this particular product may or may not be in the allowed one. CH3 CH N H,, CN heat NC N+ H NC H H CN 1. Using the stereochemistry of the provided product, state whether it must been formed in a conrotatory or disrotatory reaction. [Select]
b) Draw the structure of compounds (E-H) from the following cycloaddition reactions. i) Ph Ph hv + E CH3 CH3 ii) F heat ii1) hv G iv) CH2CH3 .CO2Me A H + MeO,C ČH2CH3
18. Which one of the following reaction steps work best to carry out the transformation shown below? A) B) D) 1) BH₂, THF 2) H₂O₂, NaOH H₂O, H₂SO₂ (cat.) 1) BH₂, THE 2) H₂O₂, NaOH Os0₁ (CH3),COOH, OH PCC CH₂Cl₂ NaBH4 H₂O A) Cyclopentene oxide PCC CH₂Cl₂ HIO₂ K₂Cr₂O₂, H₂SO, H₂O 19. What is the product of the following reaction sequence? H₂SO4 B) C) cyclopentane 20. Which is not true for Thiols (RSH)2 A) More acidic than alcohol. B) lower boiling than alcohols C) Less water soluble than alcohols D) Less acidic than alcohols heat H B) cyclopentene D) 1,2-cyclopentanediol
4. For the following reactions, develop a transition-state structure using molecular models which would account for the observed stereoselectivity. Also, describe the type of pericyclic reactions using the proper terminology. (each Br heat A & Br b) F 0°C F heat heat d) product? =& & MeO₂C OCH3 H HO 1. CO₂Me مر CO₂Me LOCH3 heat heat MeO₂C HO
Bicyclohexadiene, also known as Dewar benzene, is extremely stable despite the fact that its rearrangement to benzene is energetically favored. Explain why the rearrangement is so slow.
Identify the major product of the reaction of an alkene shown below. ||| 1. Hg(OAc)2, H2O 2. NaBH4, NaOH ....... ОН || IV ОН о, ОН

SEE MORE QUESTIONS

Recommended textbooks for you

Organic Chemistry: A Guided Inquiry

Chemistry

ISBN:

9780618974122

Author:

Andrei Straumanis

Publisher:

Cengage Learning

Organic Chemistry

Chemistry

ISBN:

9781305080485

Author:

John E. McMurry

Publisher:

Cengage Learning

Organic Chemistry: A Guided Inquiry

Chemistry

ISBN:

9780618974122

Author:

Andrei Straumanis

Publisher:

Cengage Learning

Organic Chemistry

Chemistry

ISBN:

9781305080485

Author:

John E. McMurry

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS