Homework Answers
Solution
7) Option B 'cyclopropane' is correct.
Because it has bond angel of 60°. Thus cyclopropane has the most anlge strain.
8) Option D is correct answer. This is the least stable conformer because the ethyl group is present at axial position, Thus it shows 1,3-diaxial interactions.
9) Two substituents are trans because both groups are at axial position at adjucent carbon in chain conformation.
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Questions 7, 8, and 9
Which of the following cycloalkanes has the most angle strain? Which...
6. Build the cyclobutane ring and study the angle strain and torsional strain. Draw the structures to explain thes...
6. Build the cyclobutane ring and study the angle strain and torsional strain. Draw the structures to explain these factors. 7. The conformation of cyclobutane is slightly folded. Folding gives partial relief from the eclipsing of bonds, as shown in the Newman projection. Compare this actual structure with the hypothetical planar structure. Draw the relevant structures. 8. trans-1,2-Dimethylcyclobutane is more stable than cis-1,2-dimethylcyclobutane, but cis-1,3- dimethylcyclobutane is more stable than trans-1,3-dimethylcyclobutane. Use the molecular models to find the reasons for...
8. Which of the following is the lowest energy conformer of 2,3-dimethylbutane? н Сн, CH I...
8. Which of the following is the lowest energy conformer of 2,3-dimethylbutane? н Сн, CH I AI B) II C) III D) IV CH3 H₃C HAC J CH₂ H HC CH₂ H C HC CH HC I 9. Which of the following cycloalkanes has the least angle strain? A) Cycloheptane B) Cyclopropane C) Cyclohexane D) Cyclobutane . . " 10. Which of the following chair conformations represents trans-1,4-dimethylcyclohexane?
Which of the following cycloalkanes has the least angle strain? IV I II III IV
Which of the following cycloalkanes has the least angle strain? IV I II III IV
8 Draw your two products (each in the most stable chair conformation) below using the numbering...
8 Draw your two products (each in the most stable chair conformation) below using the numbering provided Show only the OH and terr-butyl groups on the ring a) label cach group as equatorial (eq) or axial (x). b) label each group as top face (top) or bottom face (bot). trans-4-tert-butylcyclohexanol cis 4-tert-butylcyclohexanol 9. When looking at the two compounds prepared in this reduction, which compound is more stable, cis or trans? Circle your answer. 10) Draw the most stable chair...
Draw most stable chair form for the more stable stereoisomer for the molecule. All help is...
Draw most stable chair form for the more stable stereoisomer
for the molecule. All help is appreciated
yclohexane Chair Practice 9. For each of the following do two things: A draw the most stable chair form for the more stable stereoisomer for the molecule B. identify whether the more stable stereoisomer is cis or trans. 7. 1-butyl-2-methylcyclohexane 8. 3-t-butyl-1-methylcyclohexane 9. 1,4-diethylcyclohexane C. For each of the following, do two things: A draw the most stable chair form over groups C...
Which is the least stable chair conformer of the following compound? Which is the least stable...
Which is the least stable chair conformer of the following
compound?
Which is the least stable chair conformer of the following compound? III IV
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. Conformational Analysis: Chairs (25 points) Consider the following compounds: trans-1-Fluoro-2-iodocyclohexane and cis-1-Fluoro-2-iodocyclohexane Draw the skeletal...
7. Conformational Analysis: Chairs (25 points) Consider the following compounds: trans-1-Fluoro-2-iodocyclohexane and cis-1-Fluoro-2-iodocyclohexane Draw the skeletal structures and two chair conformations of each. Chair templates are provided for the cis compound. Redraw your own chairs for the trans compound. Circle the more stable conformation of each compound and briefly explain your selections below each pair, including the specific types of steric strain involved. Short phrases are great complete sentences not required! trans-1-Fluoro- 2-iodocyclohexane explanation for more stable conformation: cis-1-Fluoro- 2-lodocyclohexane...
the following compounds are chiral!? Which of the following 2-methylheptane 4-methylheptane wers on loose-leaf notebook paper...
the following compounds are chiral!? Which of the following 2-methylheptane 4-methylheptane wers on loose-leaf notebook paper frst names to show respect don Diege doke Caralin Noe hat these sies, selor and selora ae nat capitaliced ь. Br—CH-CH-сH-Вr 3-met CHC Br-CH Give the name of the following alkanes. 3. CH,CH,CH Н,сн,с b. CH-C(CH)CH(CH;CH,)CH,CH;CH(CH;) a. СICH,снь स्लट Use a Newman projection, about the indicted bond, to draw the most stable conformer for each compound 4 hexane about the C2-C3 bond 3-cthylhexane about...
check and solve the empty ones please Which of the following is a Newman projection for...
check and solve the empty ones please
Which of the following is a Newman projection for the following compound as viewed down the indicated bond? сун 9. Draw the most stable conformer of the following compound. C/ 10. Draw the Newman projection for the highest energy and lowest energy conformation of the following compound. (size: Br > CH) Br me ) be ved me TH me heighest 11. Which of the following molecule is trans-1,2-dimethylcyclohexane? A) B) D) Othe 12....
6. Build the cyclobutane ring and study the angle strain and torsional strain. Draw the structures to explain these factors. 7. The conformation of cyclobutane is slightly folded. Folding gives partial relief from the eclipsing of bonds, as shown in the Newman projection. Compare this actual structure with the hypothetical planar structure. Draw the relevant structures. 8. trans-1,2-Dimethylcyclobutane is more stable than cis-1,2-dimethylcyclobutane, but cis-1,3- dimethylcyclobutane is more stable than trans-1,3-dimethylcyclobutane. Use the molecular models to find the reasons for...
8. Which of the following is the lowest energy conformer of 2,3-dimethylbutane? н Сн, CH I AI B) II C) III D) IV CH3 H₃C HAC J CH₂ H HC CH₂ H C HC CH HC I 9. Which of the following cycloalkanes has the least angle strain? A) Cycloheptane B) Cyclopropane C) Cyclohexane D) Cyclobutane . . " 10. Which of the following chair conformations represents trans-1,4-dimethylcyclohexane?
Which of the following cycloalkanes has the least angle strain? IV I II III IV
8 Draw your two products (each in the most stable chair conformation) below using the numbering provided Show only the OH and terr-butyl groups on the ring a) label cach group as equatorial (eq) or axial (x). b) label each group as top face (top) or bottom face (bot). trans-4-tert-butylcyclohexanol cis 4-tert-butylcyclohexanol 9. When looking at the two compounds prepared in this reduction, which compound is more stable, cis or trans? Circle your answer. 10) Draw the most stable chair...
Draw most stable chair form for the more stable stereoisomer
for the molecule. All help is appreciated
yclohexane Chair Practice 9. For each of the following do two things: A draw the most stable chair form for the more stable stereoisomer for the molecule B. identify whether the more stable stereoisomer is cis or trans. 7. 1-butyl-2-methylcyclohexane 8. 3-t-butyl-1-methylcyclohexane 9. 1,4-diethylcyclohexane C. For each of the following, do two things: A draw the most stable chair form over groups C...
Which is the least stable chair conformer of the following
compound?
Which is the least stable chair conformer of the following compound? III IV
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. Conformational Analysis: Chairs (25 points) Consider the following compounds: trans-1-Fluoro-2-iodocyclohexane and cis-1-Fluoro-2-iodocyclohexane Draw the skeletal structures and two chair conformations of each. Chair templates are provided for the cis compound. Redraw your own chairs for the trans compound. Circle the more stable conformation of each compound and briefly explain your selections below each pair, including the specific types of steric strain involved. Short phrases are great complete sentences not required! trans-1-Fluoro- 2-iodocyclohexane explanation for more stable conformation: cis-1-Fluoro- 2-lodocyclohexane...
the following compounds are chiral!? Which of the following 2-methylheptane 4-methylheptane wers on loose-leaf notebook paper frst names to show respect don Diege doke Caralin Noe hat these sies, selor and selora ae nat capitaliced ь. Br—CH-CH-сH-Вr 3-met CHC Br-CH Give the name of the following alkanes. 3. CH,CH,CH Н,сн,с b. CH-C(CH)CH(CH;CH,)CH,CH;CH(CH;) a. СICH,снь स्लट Use a Newman projection, about the indicted bond, to draw the most stable conformer for each compound 4 hexane about the C2-C3 bond 3-cthylhexane about...
check and solve the empty ones please
Which of the following is a Newman projection for the following compound as viewed down the indicated bond? сун 9. Draw the most stable conformer of the following compound. C/ 10. Draw the Newman projection for the highest energy and lowest energy conformation of the following compound. (size: Br > CH) Br me ) be ved me TH me heighest 11. Which of the following molecule is trans-1,2-dimethylcyclohexane? A) B) D) Othe 12....
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