Concept explainers
Draw a chair conformation of cyclohexane with one
one
a. a 1, 1-disubstituted cyclohexane with an axial
b. a cis-1, 2-disubstituted cyclohexane with an axial
c. a trans-1, 3-disubstituted cyclohexane with an equatorial
d. a trans-1, 4-disubstituted cyclohexane with an equatorial
Want to see the full answer?
Check out a sample textbook solutionChapter 4 Solutions
Organic Chemistry
Additional Science Textbook Solutions
Living By Chemistry: First Edition Textbook
Essential Organic Chemistry (3rd Edition)
Introduction to Chemistry
Basic Chemistry
The Organic Chem Lab Survival Manual: A Student's Guide to Techniques
Chemistry by OpenStax (2015-05-04)
- • Draw the chair conformations of the following compounds and determine which geometric isomer is more stable. Also show using Newman projection that one conformation is more stable than the other. a. cis-1-isopropyl-2-methylcyclohexane b. 1-methycyclohexanearrow_forwardDraw a chair conformation of cyclohexane with one CH3CH2 group and one CH3 group that fits each description. a. a 1,1-disubstituted cyclohexane with an axial CH3CH2 group b. a cis-1,2-disubstituted cyclohexane with an axial CH3 group c. a trans-1,3-disubstituted cyclohexane with an equatorial CH3 group d. a trans-1,4-disubstituted cyclohexane with an equatorial CH3CH2 grouparrow_forwardDraw a chair conformation of cyclohexane with one CH3CH2 group and one CH3 group that fits each description. a.a 1,1-disubstituted cyclohexane with an axial CH3CH2 group b. a cis-1,2-disubstituted cyclohexane with an axial CH3 group c. a trans-1,3-disubstituted cyclohexane with an equatorial CH3 group d. a trans-1,4-disubstituted cyclohexane with an equatorial CH3CH2 group.arrow_forward
- Choose the statement that is incorrect about rings. اختر احدى الاجابات А. Planar cyclobutane is its most stable conformation. В. Planar cyclopentane would have small angle strain but severe torsional strain. C. The chair conformation of cyclohexane has no angle or torsional strain. D. Cyclopropane has the greatest angle strain. Е. The chair conformation has less torsional strain and fewer nonbonded interactions than the twist boat conformation.arrow_forwardConsider 1,2-dimethylcyclohexane.a. Draw structures for the cis and trans isomers using a hexagon for the six-membered ring.b. Draw the two possible chair conformations for the cis isomer. Which conformation, if either, is more stable?c. Draw the two possible chair conformations for the trans isomer. Which conformation, if either, is more stable?d. Which isomer, cis or trans, is more stable and why?arrow_forwardWhat is the preferred IUPAC name of the alkene shown in Figure below? CH3 CH3 CH3 `CH-CH3 A. 1-ethyl-2,4,5-trimethylcyclohexene B. 2-ethyl-1,4,5-trimethylcyclohexene C. 2-ethyl-1,4,5-trimethylcyclohex-1-ene D. 4-ethyl-1,2,5-trimethylcyclohexenearrow_forward
- Look at a cyclohexane model:a. Mark the axial bonds. Hold carbon atoms 1, 2, 3, 4, 5, and 6 firmly and flip up carbon 4. What is the resulting conformation? b. Then holding carbons 2, 3, 4, 5, and 6 firmly, flip down carbon What is now the resulting conformation?arrow_forwardWhich of the following compounds can adopt a chair conformation in which there are no axial methyl groups? O a. cis-1,2-dimethylcyclohexane O b. trans-1,3-dimethylcyclohexane Oc. cis-1,3-dimethylcyclohexane O d. None of the above O e. cis-1,4-dimethylcyclohexanearrow_forwardGiven the cyclohexane chair conformation and four similar compounds, identify the relationship of each structure to the chair conformation. CH3 H3C, B H. How is Compound B related to the chair conformation? O It is a conformation isomer (conformer). H3C H3C H O It is a constitutional isomer. O It is not an isomer. H. O It is a stereoisomer.arrow_forward
- For the following structural formula, pick the structure that accurately represents its MOST STABLE conformation. CH3 H₂Cl... Br Br Br H₂C O D. O B. O C. O A. CH3 A CH3 B CH3 ... Br 주 Br H3C C CH3 H3C CH3 Darrow_forwardExplain the concept of Cyclohexane Conformations ?arrow_forwardAnalyze the two Newman projections and determine the relationship between the two. How would you describe the relation between conformations when they are maintained at a temperature too low to permit them to interconvert? CH3 CH3 Br. H H H H A. Identify the relationship. They are identical. They are structural isomers. They are stereoisomers. They are conformers. H H -I H Br H B. What is the relationship at low temperatures? They are identical. They are conformational diastereomers. They are structural isomers. They are conformational enantiomers.arrow_forward
- Chemistry for Today: General, Organic, and Bioche...ChemistryISBN:9781305960060Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. HansenPublisher:Cengage Learning