Chemistry Exam  >  Chemistry Questions  >  Consider the following statements:(I) Clasise... Start Learning for Free
Consider the following statements:
(I) Clasisen rearrangement is a [3, 3] sigmatropic rearrangement.
(II) Cope rearrangement proceeds via is chair like transition state.
(III) In the photochemical [2 + 2] cycloaddition of ethylene overlapping of HOMO of one molecule with LUMO of the other molecular takes place.
Select the correct statements.
  • a)
    I and III
  • b)
    II and III
  • c)
    Only II
  • d)
    I and II
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Consider the following statements:(I) Clasisen rearrangement is a [3, ...
Explanation:

  • Claisen rearrangement: It is a [3, 3] sigmatropic rearrangement, which involves the migration of an allyl group from one oxygen atom to another oxygen atom, with the formation of a new carbon-carbon bond. Hence, statement I is correct.

  • Cope rearrangement: It is a [3, 3] sigmatropic rearrangement, which involves the migration of a hydrocarbon group from one carbon atom to an adjacent carbon atom, with the formation of a new carbon-carbon bond. This reaction proceeds via a chair-like transition state. Hence, statement II is correct.

  • Photochemical [2+2] cycloaddition: This reaction involves the formation of a cyclobutane ring from two molecules of ethylene under the influence of light. In this reaction, the highest occupied molecular orbital (HOMO) of one molecule overlaps with the lowest unoccupied molecular orbital (LUMO) of the other molecule. Hence, statement III is also correct.


Therefore, the correct option is 'D' - I and II.
Free Test
Community Answer
Consider the following statements:(I) Clasisen rearrangement is a [3, ...
Statement (lll) is Wrong beacuse this statement is only correct for[4+2] cycloaddition
Explore Courses for Chemistry exam
Consider the following statements:(I) Clasisen rearrangement is a [3, 3] sigmatropic rearrangement.(II) Cope rearrangement proceeds via is chair like transition state.(III) In the photochemical [2 + 2] cycloaddition of ethylene overlapping of HOMO of one molecule with LUMO of the other molecular takes place.Select the correct statements.a)I and IIIb)II and IIIc)Only IId)I and IICorrect answer is option 'D'. Can you explain this answer?
Question Description
Consider the following statements:(I) Clasisen rearrangement is a [3, 3] sigmatropic rearrangement.(II) Cope rearrangement proceeds via is chair like transition state.(III) In the photochemical [2 + 2] cycloaddition of ethylene overlapping of HOMO of one molecule with LUMO of the other molecular takes place.Select the correct statements.a)I and IIIb)II and IIIc)Only IId)I and IICorrect answer is option 'D'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Consider the following statements:(I) Clasisen rearrangement is a [3, 3] sigmatropic rearrangement.(II) Cope rearrangement proceeds via is chair like transition state.(III) In the photochemical [2 + 2] cycloaddition of ethylene overlapping of HOMO of one molecule with LUMO of the other molecular takes place.Select the correct statements.a)I and IIIb)II and IIIc)Only IId)I and IICorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements:(I) Clasisen rearrangement is a [3, 3] sigmatropic rearrangement.(II) Cope rearrangement proceeds via is chair like transition state.(III) In the photochemical [2 + 2] cycloaddition of ethylene overlapping of HOMO of one molecule with LUMO of the other molecular takes place.Select the correct statements.a)I and IIIb)II and IIIc)Only IId)I and IICorrect answer is option 'D'. Can you explain this answer?.
Solutions for Consider the following statements:(I) Clasisen rearrangement is a [3, 3] sigmatropic rearrangement.(II) Cope rearrangement proceeds via is chair like transition state.(III) In the photochemical [2 + 2] cycloaddition of ethylene overlapping of HOMO of one molecule with LUMO of the other molecular takes place.Select the correct statements.a)I and IIIb)II and IIIc)Only IId)I and IICorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemistry. Download more important topics, notes, lectures and mock test series for Chemistry Exam by signing up for free.
Here you can find the meaning of Consider the following statements:(I) Clasisen rearrangement is a [3, 3] sigmatropic rearrangement.(II) Cope rearrangement proceeds via is chair like transition state.(III) In the photochemical [2 + 2] cycloaddition of ethylene overlapping of HOMO of one molecule with LUMO of the other molecular takes place.Select the correct statements.a)I and IIIb)II and IIIc)Only IId)I and IICorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Consider the following statements:(I) Clasisen rearrangement is a [3, 3] sigmatropic rearrangement.(II) Cope rearrangement proceeds via is chair like transition state.(III) In the photochemical [2 + 2] cycloaddition of ethylene overlapping of HOMO of one molecule with LUMO of the other molecular takes place.Select the correct statements.a)I and IIIb)II and IIIc)Only IId)I and IICorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Consider the following statements:(I) Clasisen rearrangement is a [3, 3] sigmatropic rearrangement.(II) Cope rearrangement proceeds via is chair like transition state.(III) In the photochemical [2 + 2] cycloaddition of ethylene overlapping of HOMO of one molecule with LUMO of the other molecular takes place.Select the correct statements.a)I and IIIb)II and IIIc)Only IId)I and IICorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Consider the following statements:(I) Clasisen rearrangement is a [3, 3] sigmatropic rearrangement.(II) Cope rearrangement proceeds via is chair like transition state.(III) In the photochemical [2 + 2] cycloaddition of ethylene overlapping of HOMO of one molecule with LUMO of the other molecular takes place.Select the correct statements.a)I and IIIb)II and IIIc)Only IId)I and IICorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Consider the following statements:(I) Clasisen rearrangement is a [3, 3] sigmatropic rearrangement.(II) Cope rearrangement proceeds via is chair like transition state.(III) In the photochemical [2 + 2] cycloaddition of ethylene overlapping of HOMO of one molecule with LUMO of the other molecular takes place.Select the correct statements.a)I and IIIb)II and IIIc)Only IId)I and IICorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Chemistry tests.
Explore Courses for Chemistry exam
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev