1. a. (4 points) Draw the dash-wedge structure of (2R,3.5)-2,3-dichloropentane. b. (4 points) Draw the Fischer...
1. a. (4 points) Draw the dash-wedge structure of (2R,3S)-2,3-dichloropentane. b. (4 points) Draw the Fischer projection of enantiomer of the compound drawn in part a. Name the enantiomers. c. (6 points) Draw the Newman projections (looking down the C2-C3 bonds) of the diastereomers of the compound drawn in part b. Name the diastereomers.
please do all of 1 and please explain number 2, I dont understand. 1. a. (4 points) Draw the dash-wedge structure of (2,3S)-2,3-dichloropentane. b. (4 points) Draw the Fischer projection of enantiomer of the compound drawn in part a. Name the enantiomers. c. (6 points) Draw the Newman projections (looking down the C2-C3 bonds) of the diastereomers of the compound drawn in part b. Name the diastereomers. 2. (6 points) Draw the mechanisms of the propagation steps of the reaction...
2.Draw a Newman projection, a wedge-dash structure and a Fischer projection for all four stereoisomers of 2-bromo-3-chlorobutane. The wedge dash structure is given for part a – all you need to do is finish the Newman projection and the Fischer projection. a.2R, 3R. On each structure show how you determined where each group goes. (part a only) b.2S,3S c.2S, 3R d.2R, 3S CH3 Brci CH CH3
Draw the structure of (2R,3S)-2,3-dichloropentane. Take particular care to indicate three-dimensional stereochemical detail properly. (Using wedge and dash bonds)
how to draw wedge dash structure and newman projection for C2-C3 bond for 3-bromo-2,2,3-trichloro-1-fluorobutane
how to draw wedge dash structure and newan projection for C2-C3 and C5-C6 bond for (1R,2R,3R,5S)5-bromo-2-chloro-3-ethyl-5-methylcyclohexanol
7. Draw a wedge and dash structure of the following Newman projection GHz ви HBr CH3 t Br 8. Which of the following is a gauche conformation for butane? Which is the least stable conformation? The most stable? What is the dihedral angle for conformation ? нсна н CH... HOC CH3 сна нен нан, нен нен н" нэн IV 9. What is the IUPAC name of the following compound?
(a) Draw the saw-horse (or wedge-dash) projection of (2S,3R)-3-methylpentan-2-ol. [Marks: 1] (b) Draw the Newman projections of the 2-3 bond in (2S,3R)-3-methylpentan-2-ol. [Marks: 2] (c) Based on the Newman projections from part b. - draw a rotation vs. energy diagram (you do NOT need to give specific energy values in this diagram) that will allow you to identify the most stable confirmation around the 2-3 bond. Assume the greatest steric and torsional strain occurs when the hydroxyl and ethyl groups...
19-26 thanks! 19-29* PART 3: 2,3-BUTANEDIOL CH-CH(OH)-CH(OH)-CH, mirror images, not superimposable Build as many models of 2,3-butanediol as you can. First, attach two carbons with a single bond. To each carbon add one carbon, one hydrogen, and one oxygen. To complete the structure, Ti the remaining hydrogen atoms. Remember, a model is not different if it is completely superimposable on one already constructed! 13. How many stereochemically different models are possible for 2,3-butanediol? 14. What characteristic does one of these...
8. (15 points) For 2,3-Dichlorobutane: a) Draw the structure & label with an asterisk any centers of chirality b) What is the maximum number of stereoisomers? (Show your work.) c) Show the unique stereoisomers of this compound using Fischer projections (following the usual conventions with respect to positioning C-1 and the C backbone). Designate any enantiomers, diasteromers, &/or meso compounds.