
I'm confused with the ring flip 3. (10 points) chair A. The cyclohexane ring depicted below...
PART B: Cyclohexane Procedures: 1. Make a model of cis-1,2-dimethylcyclohexane and trans-1,2-dimethylcyclohexane. Do a ring flip of both *Draw the two conformation of the cis and trans cyclohexane structures above *List the number of axial and equatorial substituents for both the cis and trans *Which isomer is more stable overall, cis or trans? Why? 2. Make a model cis-1,3-dimethylcyclohexane and trans-1,3-dimethylcyclohexane. Do a ring flip *Draw the two conformation of the cis and trans cyclohexane structures above *List the number...
9. Draw the chair conformations of the substitute cyclohexanes showing the ring flip.. Show axial and equitorial bonds clearly. Label which conformation is most stable or if @ l-ethyl cyclohexane they are equal. O CIS-1,2-dimetyl cyclohexane © trans-1,2-dimethyl cyclohexane
of 9 Select the statement about equatorial and axial positions in cyclohexane that is correct Each face of the chair conformation of cyclohexane ring has three axial and three equatorial hydrogens in an alternating pattern. OTwo substituents on the same face of the ring that are not adjacent to each other will be trans. Two substituents on the same face of the ring, one of which is axial and one that is equatorial with be trans to each other. OEach...
Chem 241 Chapter 3 -Class Praetice 2 Draw the 2 chair conformations of the following, label the substituents as axial or equatorial Determine which conformation between the 2 is more stable. cis-1-ethyl-3-isopropylcyclohexane trans-1-isopropyl-2-methyleyclohexane trans-1-methyl-2-isopropylcyclohexane cis-1-ethyl-4-methylcyclohexane Among the following, which respresent the same compound? Which represent different compounds? CH3 H3C HyC CHs H. CH3
Remove one hydrogen atom from C_1 the hexane model, and one H atom plus its bond from C_6. Bend the carbon chain around and join C_1 to C_6 to make cyclohexane. Mentally designate one carbon as C_1. Place the model in the chair conformation by tipping C_1 up and C_4 down. Check the conformation with the instructor. Identify the axial and equatorial hydrogens and describe their orientation relative to the plane of the ring. Look down each successive C-C bond...
Draw the following substituted cyclohexane in its most stable
chair conformation. Clearly indicate which bonds are axial and
which bonds are equatorial and provide the systematic name for this
compound, using R/S designations to indicate stereochemistry.
CH3 CI CH3 CH3 H3C
1. Now construct cis-1,2-dimethylcyclohexane in the chair conformation and draw it. Perform the ring flip and draw that conformation. Which of the two conformations is preferred? This compound is meso, find the conformation that accounts for this? 2. Construct and draw trans-1-ethyl-2-methylcyclohexane in the chair conformation. Perform the ring flip and draw that conformation. Which conformation is preferred/most stable? Why? Construct and draw the cis isomer in the most stable chair conformation. Perform the ring flip and draw that conformation....
The cyclohexane derivative shown exists primarily in the more
stable of the two available chair conformations. Give the position,
axial or equatorial, of each of the three groups shown in the more
stable chair conformation. If a group divides its time equally
between axial and equatorial positions, indicate this with
ax/eq.
The table of "Axial Strain Energies for Monosubstituted
Cyclohexanes" found in the "Strain Energy Increments" section of
the Reference tool is useful for answering this
question.
The choices are...
Draw the two chair conformations of each compound and label the substituents as axial and equatorial. In each case, determine which conformation is more stable. a. trans-1-ethyl-2-isopropylcyclohexane b. trans-1-ethyl-3-methylcyclohexane C. Cis-1-ethyl-4-methylcyclohexane d. cis-1-ethyl-3-methylcyclohexane
Please make hand writing neat. Thank you:)
12. Construct cis-1,3-dimethylcyclohexane by placing both -CH, groups in the axial Which is the more positions. Do ring flips and examine the two chair conformations. stable conformation? Explain your answer (12) 13. Construet trans-1,3-dimethylcyclohexane by placin g one- CH3 group axial and the other equatorial. Do ring flips and examine the two chair conformations. the more stable conformation? Explain your answer (13a). Given the two1 trans-1,3-dimethylcyclohexane and cis-1,3-dimethyleyc stable isomer? Explain your answer...