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- a) Draw a Newmann Projection of the following compound looking down the indicated bond (Ph represents a benzene ring). Br b) Using a Newmann Projection draw a conformation of this molecule where the bromine and hydrogen are in an anti-conformationExplain why the following molecule prefers to adopt an axial conformation for the methyl group.Draw both a chair confirmation of the substitutes cyclohexane drawn below. Be certain to actually do a ring flip. Also be certain to very clearly distinguish axial from equatorial positions. Then circle the more stable conformation.
- Draw the chair flip of the following conformation. Br CIObserve the Newman projection of the next molecule along the bond shown in red with the front carbon the one bonded to "Cl". a) Draw one of the Newman projections of the molecule with a staggered conformation. b) Draw one of the Newman projections of the molecule with an eclipsed conformation.Draw the lowest energy Newman projection of the following molecule sighting down the C3-C4 bond.
- Problem: Use the molecules below to answer the questions. (a) List one pair of enantiomers, if any. (b) List one pair of diastereomers, if any. (c) List one meso compound, if any. (d) How many total configurational isomers are possible for compound 2? онно CH 3 он но H QH H CH3 CH 3 CH3 H OH но. „CH3 H он H H. "CH 3 H H "CH3 H H3C H3C 4 3 1Draw Newman projects of all the staggered conformations for the molecule below looking along the bolded bond in the direction indicated by the arrow. The carbon closest to the arrow should be the front carbon of your Newman projection. (It is a practice problem from the book but I am confused about how to approach it.)Recitation Discussion Problem: USE MOLECULAR MODELS and bring them to recitation. Molecule: 2-methylpentane 1. Draw in bond-line notation. Number all carbons in the pentane backbone. Identify carbons #2 -3. Circle these on your bond-line structure. 2. Draw the Newman projections for all 60° rotations looking down carbons #2-3- starting with the eclipsed conformation. Make sure to keep the front carbon static only rotate the back carbon. Use models. You should draw seven Newman projections in total, 4 eclipsed, 3 staggered. The first and last Newman projections (0° and 360°) are identical. See Karty Chapter 4 for examples. 3. Identify the major interactions occurring in each conformer (which bonds are eclipsed; which have gauche interactions, etc.) and RANK associated energy of eclipsed in terms of size of group. Greater energies are involved for larger eclipsed groups. See Karty Chapter 4 energy diagram examples. 4. Plot these conformations on an Energy Diagram (similar to Karty Figure…
- For the following pair of molecules, (1) Draw out the chair conformation for each molecule, flip the ring if it is possible. (2) Compare both molecules to circle out which one is more stable. (3) Assign the absolute configuration (R/S) on all the chiral center(s), if it applicable. (4) Name the molecule on the left side. VS.Draw the lowest energy Newman projection of the molecule on the left looking down the bond indicated for molecule A. For molecules B and C, draw the lowest energy chair conformations.Draw both chair confirmations of the substituted cyclohexane drawn below. Be certain to actually do a ring flip. Also be certain to very clearly distinguish axial from equatorial positions. Then circle the more stable conformation. Draw a planar representation of a stereoisomers which would have a higher heat of combustion and lower heat of combustion.