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5. Draw the two chair conformations for trans-1-ethyl-3-methylcyclohexane. Label substituents as to whether they are in...
Draw the two chair conformations of each compound and label the substituents as axial and equatorial....
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
5. Draw b . Clearly label the oth chair conformations of trans-1-ethyl-3-methylcyclohexane ubstituents as axial or...
5. Draw b . Clearly label the oth chair conformations of trans-1-ethyl-3-methylcyclohexane ubstituents as axial or equatorial. (You do not need to show all the hydro Which conformer is lower energy? 6. For the following reactions, (1) predict the products, (2) provide curved arrows, and (3) predict whether the reaction equilibrium favors products or reactants. Provided an explanation for ONa OH
Chem 241 Chapter 3 -Class Praetice 2 Draw the 2 chair conformations of the following, label...
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
6. Draw both chair conformations of trans-1-bromo-2-methylcyclohexane. Circle the most stable conformation.
6. Draw both chair conformations of trans-1-bromo-2-methylcyclohexane. Circle the most stable conformation.
How would you draw the most stable conformation of trans-1-ethyl-3-methylcyclohexane? Axial ethyl group on C-1, Axial...
How would you draw the most stable conformation of
trans-1-ethyl-3-methylcyclohexane?
Axial ethyl group on C-1, Axial methyl group on C-3
Axial ethyl group on C-1, Equatorial methyl group on C-3
Equatorial ethyl group on C-1, Axial methyl group on C-3
Equatorial ethyl group on C-1, Equatorial methyl group on C-3
Choices b and c are both correct
Choices a and d are both correct
How would you draw the most stable conformation of
trans-1-chloro-2-fluorocyclohexane?
Axial chlorine on C-1, Axial fluorine...
9. Draw two different chair conformations of cyclohexanol, showing all hydropen atoms. Identify each position as...
9. Draw two different chair conformations of cyclohexanol, showing all hydropen atoms. Identify each position as axial or equatorial 10. Draw the most stable chair conformation of the following molecules, and estimate the amount of strain in each: (a) trans-1-Chloro-3-methylcyclohexane (b) cis-1-Ethyl-2-methylcyclohexane (c) cis-1-Bromo-4-ethylcyclohexane (d) cis-1-tert-Butylcyclohexane 11. Which isomer is more stable, cis-decalin or trans-decalin? Explain. 12. Glucose exists in two forms having a 36:64 ratio at equilibrium. Draw a skeletal structure of each, describe the difference between them and...
7. (13 points) For the compound 1-tert-butyl-4-methylcyclohexane: a. Draw the two possible chair conformations for the...
7. (13 points) For the compound 1-tert-butyl-4-methylcyclohexane: a. Draw the two possible chair conformations for the cis isomer, Which conformation, if either, is more stable? Circle one b. Draw the two possible chair conformations for the cis isomer, Which conformation, if either, is more stable? Circle one trans: C. Between the two more stable isomers circled above, which is more stable? Why?
4 4. (a) Draw the structure of the two chair forms of methylcyclohexane. Draw in all...
4 4. (a) Draw the structure of the two chair forms of methylcyclohexane. Draw in all bonds (even the C-H bonds). Be sure the axial and equatorial bonds are shown correctly. On the appropriate structure, indicate the 1,3-diaxial interactions involving the methyl group. (b) Which is more stable, trans-1,3-dimethylcyclohexane or cis-1,3-dimethylcyclohexane? Why? 5. Draw the Newman projections for the anti conformation and two types of eclipsed conformations of 1,2-diiodoethane. Of the two eclipsed conformations, which is of higher energy, and...
7. Draw and label both cis and trans isomers of 1-ethyl-4-methylcyclohexane. (10 pt) a. For each...
7. Draw and label both cis and trans isomers of 1-ethyl-4-methylcyclohexane. (10 pt) a. For each isomer, draw the two possible chairs and indicate which of the two will be preferred and by how much (a lot or little). (5 pt) b. Which of the four is considered the most stable (label as "best") and which is least stable ("worst")? (3 pt) c. Clearly label 1,3-diaxial interactions, if present, in any of the conformations? (2 pt) Cis Trans
Draw the most stable and least stable chair conformations for the following molecule: cis-1,3-trans-2,4-tetramethylcyclohexane. Be sure...
Draw the most stable and least stable chair conformations for the following molecule: cis-1,3-trans-2,4-tetramethylcyclohexane. Be sure to label clearly the axial and equatorial groups as appropriate.
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
5. Draw b . Clearly label the oth chair conformations of trans-1-ethyl-3-methylcyclohexane ubstituents as axial or equatorial. (You do not need to show all the hydro Which conformer is lower energy? 6. For the following reactions, (1) predict the products, (2) provide curved arrows, and (3) predict whether the reaction equilibrium favors products or reactants. Provided an explanation for ONa OH
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
6. Draw both chair conformations of trans-1-bromo-2-methylcyclohexane. Circle the most stable conformation.
How would you draw the most stable conformation of
trans-1-ethyl-3-methylcyclohexane?
Axial ethyl group on C-1, Axial methyl group on C-3
Axial ethyl group on C-1, Equatorial methyl group on C-3
Equatorial ethyl group on C-1, Axial methyl group on C-3
Equatorial ethyl group on C-1, Equatorial methyl group on C-3
Choices b and c are both correct
Choices a and d are both correct
How would you draw the most stable conformation of
trans-1-chloro-2-fluorocyclohexane?
Axial chlorine on C-1, Axial fluorine...
9. Draw two different chair conformations of cyclohexanol, showing all hydropen atoms. Identify each position as axial or equatorial 10. Draw the most stable chair conformation of the following molecules, and estimate the amount of strain in each: (a) trans-1-Chloro-3-methylcyclohexane (b) cis-1-Ethyl-2-methylcyclohexane (c) cis-1-Bromo-4-ethylcyclohexane (d) cis-1-tert-Butylcyclohexane 11. Which isomer is more stable, cis-decalin or trans-decalin? Explain. 12. Glucose exists in two forms having a 36:64 ratio at equilibrium. Draw a skeletal structure of each, describe the difference between them and...
7. (13 points) For the compound 1-tert-butyl-4-methylcyclohexane: a. Draw the two possible chair conformations for the cis isomer, Which conformation, if either, is more stable? Circle one b. Draw the two possible chair conformations for the cis isomer, Which conformation, if either, is more stable? Circle one trans: C. Between the two more stable isomers circled above, which is more stable? Why?
4 4. (a) Draw the structure of the two chair forms of methylcyclohexane. Draw in all bonds (even the C-H bonds). Be sure the axial and equatorial bonds are shown correctly. On the appropriate structure, indicate the 1,3-diaxial interactions involving the methyl group. (b) Which is more stable, trans-1,3-dimethylcyclohexane or cis-1,3-dimethylcyclohexane? Why? 5. Draw the Newman projections for the anti conformation and two types of eclipsed conformations of 1,2-diiodoethane. Of the two eclipsed conformations, which is of higher energy, and...
7. Draw and label both cis and trans isomers of 1-ethyl-4-methylcyclohexane. (10 pt) a. For each isomer, draw the two possible chairs and indicate which of the two will be preferred and by how much (a lot or little). (5 pt) b. Which of the four is considered the most stable (label as "best") and which is least stable ("worst")? (3 pt) c. Clearly label 1,3-diaxial interactions, if present, in any of the conformations? (2 pt) Cis Trans
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