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The stable conformer (s) of trans-1-4- d...

The stable conformer `(s)` of trans`-1-4-` dimethyl] cyclohexane is/are:

A

`1-` axial -`4-` equatorial form

B

`1-` axial `-4-` axial form

C

`1-` equatorial `-4-` axial from

D

`1-` equatorial`-4-` equatorial from

Text Solution

Verified by Experts

The correct Answer is:
D
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Each Me/H, 1,3-diaxial interaction imparts 3.75 kJ mol^(-1) and each Me/Me, 1,3-diaxial interation imparts 15 kJ mol^(-1) of instability to a compound. Find the energy differences between the more stable conformers of a. Cis - and trans-1,3-dimethyl cyclohexane. b. (e,e) and (a,a) trans-1,2-dimethyl cyclohexane. c. cis- and trans-1,1,3,5-tetramethyl cyclohexane.

How many of the following statements are correct? 1) The most stable conformer of cis-1,3-cyclohexanediol is chair form. 2) Cis-1,3-cyclohexanediol is more stable than trans -1.3-cyclohexanediol. 3) iN Cis 1,3-cyclohexanediol both the OH groups occupy equitorial positions. 4)The most stable conformerf of trans -1,4-cyclohexanediol is chair form. 5) The most stable conformer of Cis-1,4-cyclohexanediol is boat conformer.

Knowledge Check

  • The stable form of trans-1,4-dimethylcylohexane is represented as:

    A
    B
    C
    D

  • Which would be the most stable conformation of trans-1-ethyl-3-methylcyclohexane ?

    A
    equatorial (methyl) -equatorial (ethyl)
    B
    axial (methyl) -equatorial (ethyl)
    C
    axial (methyl)-axial (ethyl)
    D
    axial (ethyl)-equatorial (methyl)

  • The most stable from trans-1,2-dimethyl cyclohexane is:

    A
    (a) (1e, 2e)
    B
    (b) (1a, 2a)
    C
    (c) (1e, 2a)
    D
    (d) (1a, 2e)

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