Concept explainers
(a)
Interpretation:
The given compounds couldin principle be resolved into enantiomers at very low temperatures or not is to be identified.
Concept introduction:
A carbon atom that has four nonequivalent atoms or groups attached to it is known as the chiral carbon atom. Chiral carbon centers are also called as asymmetric or stereogenic centers. A carbon atom that does not have four nonequivalent atoms or groups attached to it is known as an achiral carbon atom.
(b)
Interpretation:
The given compounds couldin principle be resolved into enantiomers at very low temperatures or not is to be identified.
Concept introduction:
A carbon atom that has four nonequivalent atoms or groups attached to it is known as the chiral carbon atom. Chiral carbon centers are also called as asymmetric or stereogenic centers. A carbon atom that does not have four nonequivalent atoms or groups attached to it is known as an achiral carbon atom.
(c)
Interpretation:
The given compounds couldin principle be resolved into enantiomers at very low temperatures or not is to be identified.
Concept introduction:
A carbon atom that has four nonequivalent atoms or groups attached to it is known as the chiral carbon atom. Chiral carbon centers are also called as asymmetric or stereogenic centers. A carbon atom that does not have four nonequivalent atoms or groups attached to it is known as an achiral carbon atom.
Want to see the full answer?
Check out a sample textbook solutionChapter 6 Solutions
Organic Chemistry
- Consider 1-bromopropane, CH3CH2CH2Br. (a) Draw a Newman projection for the conformation in which CH3 and -Br are anti (dihedral angle 180°). (b) Draw Newman projections for the conformations in which - CH3 and -Br are gauche (dihedral angles 60° and 300°). (c) Which of these is the lowest energy conformation? (d) Which of these conformations, if any, are related by reflection?arrow_forwarddraw the most stable conformation of (a) ethylcyclohexane (b) 3-isopropyl-1,1-dimethylcyclohexanearrow_forward(a) Is the compound CH3CH≡CH2 saturated or unsaturated?Explain. (b) What is wrong with the formulaCH3CH2CH≡CH3?arrow_forward
- Draw both cis- and trans-1,4-dimethylcyclohexane in their more stable chairconformations. (a) How many stereoisomers are there of cis-1,4-dimethylcyclohexane, and how many of trans-1,4-dimethylcyclohexane? (b) Are any of the structures chiral? (c) What are the stereochemical relationships among the various stereoisomers of 1,4-dimethylcyclohexane?arrow_forward(a) How many stereogenic double bonds are in octa-1,3,5-triene? How many stereocenters are there? Draw and name the four stereoisomers of octa-1,3,5-triene.arrow_forwardDraw a Fischer projection for each of the following molecules shown in its zigzag conformation. (a) OH (b) OH (c) OH CI HO HO HO `CN HƠ CGH5 OH OH OH OHarrow_forward
- Draw each compound in its most stable conformation(s). Then draw it in its most symmetric conformation, and determine whether it is chiral.(a) 2-methylbutanearrow_forwardWhich of the following compounds is optically active? Explain your answer. (C4) Cl,C=CH(CH,) NH,CHCOOH (CH,),C(NH, )COOH CH(CH,), A вarrow_forwardThe following are representations of two forms of glucose. The six-membered ring is known to exist in a chair conformation in each form. Draw clear representations of the most stable conformation of each. Are they two different conformations of the same molecule, or are they stereoisomers that cannot be interconverted by rotation about single bonds? Which substituents (if any) occupy axial sites?arrow_forward
- For each of the following molecular formulas, determine the number of elements of unsaturation,and draw three examples.(a) C4H4Cl2 (b) C4H8Oarrow_forwardDraw the most stable conformation of cis-1-tert-butyl-3-ethylcyclohexane. (a) (b) trans-1-tert-butyl-2-methylcyclohexane. (c) trans-1-tert-butyl-3-(1,1-dimethylpropyl)cyclohexane.arrow_forwardWhich of the following compounds are chiral? Draw them, and label the chirality centers. (a) 2, 4-Dimethylheptane (b) 5-Ethyl-3, 3-dimethylheptane (c) cis-1, 4-Dichlorocyclohexanearrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning