Essential Organic Chemistry (3rd Edition)
3rd Edition
ISBN: 9780321937711
Author: Paula Yurkanis Bruice
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 62P
Using Newman projections, draw the most stable conformation for the following:
- a. 3-methylpentane, viewed along the C-2 8 C-3 bond
- b. 3-methylhexane, viewed along the C-3 8 C-4 bond
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2. Draw the Newman projection for the following compound by looking down the C2–C3 bond. Rotate about the C2–C3 bond and draw two additional staggered conformations. Predict which one is the most stable conformer.
Use a Newman projection about the indicated bond to draw the most stable conformer for each compound (a) 3,3-dimethylhexane about the C3¬C4 bond
Consider the rotation about the C3-C4 bond of hexane. Draw out the Newman projection for the most stable conformation
Chapter 3 Solutions
Essential Organic Chemistry (3rd Edition)
Ch. 3.1 - Name each of the following:Ch. 3.1 - Draw the structures and name the four...Ch. 3.1 - Draw the structure for each of the following...Ch. 3.1 - Name the following compounds:Ch. 3.1 - Prob. 7PCh. 3.2 - What is each compounds systematic name?Ch. 3.2 - Prob. 11PCh. 3.3 - Prob. 12PCh. 3.3 - Convert the following condensed structures into...Ch. 3.3 - The molecular formula for ethyl alcohol (CH3CH2OH)...
Ch. 3.3 - Draw a condensed and a skeletal structure for the...Ch. 3.3 - What is each compounds systematic name?Ch. 3.4 - Prob. 17PCh. 3.4 - Give two names for each of the following alkyl...Ch. 3.5 - Are the following compounds primary, secondary, or...Ch. 3.5 - Name the following amines and tell whether they...Ch. 3.5 - Draw the structures and provide systematic names...Ch. 3.6 - Predict the approximate size of the following bond...Ch. 3.7 - What is the smallest straight-chain alkane that is...Ch. 3.7 - Prob. 24PCh. 3.7 - Prob. 25PCh. 3.7 - Prob. 26PCh. 3.7 - List the compounds in each set from highest...Ch. 3.8 - Rank the following compounds in each set from most...Ch. 3.8 - In which solvent would cyclohexane have the lowest...Ch. 3.8 - Prob. 30PCh. 3.9 - Prob. 31PCh. 3.9 - a. Draw the three staggered conformations and the...Ch. 3.9 - a. Draw the most stable conformation of pentane...Ch. 3.11 - Draw 1,2,3,4,5,6-hexachlorocyclohexane with a. all...Ch. 3.12 - At any one time, would you expect there to be more...Ch. 3.13 - Prob. 36PCh. 3 - a. How many hydrogens does an alkane with 17...Ch. 3 - Prob. 2PCh. 3 - Draw a condensed structure and a skeletal...Ch. 3 - Prob. 39PCh. 3 - Prob. 40PCh. 3 - Which of the following represents a cis isomer?Ch. 3 - a. How many primary carbons does each of the...Ch. 3 - Name the following amines and tell whether they...Ch. 3 - Which of the following conformers of isobutyl...Ch. 3 - What is each compounds name? a. CH3CH2CH2OCH2CH3Ch. 3 - Draw the structural formula for an alkane that has...Ch. 3 - Which has a. the higher boiling point:...Ch. 3 - Ansaid and Motrin belong to the group of drugs...Ch. 3 - A student was given the structural formulas of...Ch. 3 - Which of the following conformers has the highest...Ch. 3 - Prob. 51PCh. 3 - Draw skeletal structures for the following: a....Ch. 3 - Prob. 53PCh. 3 - For rotation about the C-3 8 C-4 bond of...Ch. 3 - Prob. 55PCh. 3 - What is each compounds systematic name?Ch. 3 - Draw the two chair conformers for each of the...Ch. 3 - Draw the nine constitutional isomers with...Ch. 3 - Prob. 59PCh. 3 - Prob. 60PCh. 3 - Prob. 61PCh. 3 - Using Newman projections, draw the most stable...Ch. 3 - For each of the following disubstituted...Ch. 3 - Prob. 64PCh. 3 - Prob. 65PCh. 3 - What is each compounds systematic name?Ch. 3 - Prob. 67PCh. 3 - Bromine is a larger atom than chlorine, but the...Ch. 3 - Prob. 69PCh. 3 - Prob. 70PCh. 3 - a. Draw a potential energy diagram for rotation...
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- using newman projections draw the least and most stable conformations with respect to the bond indicated 1-hexyne (C3 is front carbon and C4 is back carbon)arrow_forwardFollowing is a chair conformation of cyclohexane with the carbon atoms numbered 1 through 6. (a) Draw hydrogen atoms that are above the plane of the ring on carbons 1 and 2 and below the plane of the ring on carbon 4. (b) Which of these hydrogens are equatorial? Which are axial? (c) Draw the alternative chair conformation. Which hydrogens are equatorial? Which are axial? Which are above the plane of the ring? Which are below it?arrow_forwardOn the left is a stereorepresentation of glucose (we discuss the structure and chemistry of glucose in Chapter 25). (a) Convert the stereorepresentation on the left to a planar hexagon representation. (b) Convert the stereorepresentation on the left to a chair conformation. Which substituent groups in the chair conformation are equatorial? Which are axial?arrow_forward
- Which is/are the second-most-stable conformer(s) on your list? These are the options to the question I attached below. A. both 3 & 5 B. both 1 & 4 C. 2 only D. 6 onlyarrow_forwardDraw a perspective representation of the most stable conformation of 3-methylhexane.arrow_forwardConsider the following compound: *figure is screenshot* Draw the flipped structure and calculate the total energy cost associated with each conformation(both the structure above and its flipped conformation)using the following information: CH3-H 1,3-diaxial= 3.8 KJ/mol; Assume there is no cost of energy when a CH3group is at the equatorial position.arrow_forward
- Using Newman projections draw the most stable and least stable conformers of 3-methylhexane, viewed along the C2-C3 bond.arrow_forwardDraw a graph, of the torsional strain of 2-methylpropane as it rotates about the bond between C1 and C2. Show the dihedral angle and draw a Newman projection for each staggered and eclipsed conformationarrow_forwardDraw a Newman projection of the most and the least stable conformation of the following compounds (sighting along the C2-C3 bond): a) 2,3-dimethylbutane b) 1,4-dichlorobutane c) pentane (assign strain energy to each conformation) Please explain how you got your answers.arrow_forward
- a) draw the newman projectjon between C3-C4 bond for all of the structures over 360 degrees of rotation. start with highest energy of conformation b) starting at 0 degrees draw a qualitative torsional energy plot as a function of degree of rotationarrow_forwardWrite the energy diagram corresponding to each conformer by writing the conformers (and Newman projection formulas) formed by the rotation of the bond between the carbon 3 and 4 (C3 and C4) of the 2-methylpentane. Indicate the most stable and unstable conformers.arrow_forward(a) Using Newman projections, draw all staggered and eclipsed conformations that result from rotation around the bond highlighted in red in each molecule; (b) draw a graph of energy versus dihedral angle for rotation around this bond.arrow_forward
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