Use your molecular modeling kit to determine the absolute configurations of the following compounds. Define each stereocenter as either (R) or (S). If the molecule does not have a stereocenter select “achiral". (For extra UNGRADED practice, you could name these compounds fully.) CH3 CIE H CI „CH3 T"CH3 Br CI CI H, H3C Br H3C." H' Br Br

Use your molecular modeling kit to determine the absolute configurations of the following compounds. Define each stereocenter as either (R) or (S). If the molecule does not have a stereocenter select “achiral". (For extra UNGRADED practice, you could name these compounds fully.) CH3 CIE H CI „CH3 T"CH3 Br CI CI H, H3C Br H3C." H' Br Br

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Dictate the stereocenter if present, in these molecules. Indicate if achiral. CH3 H3C Br CH3 H3C, 'N´ H Br H3C C(CH3)3 CH3 H SH
Use your molecular modeling kit to determine the absolute configurations of the following compounds. Define each stereocenter as either (R) or (S). If the molecule does not have a stereocenter select “achiral". (For extra UNGRADED practice, you could name these compounds fully.) OH H CH2CH3 H H. H3CH H3CH2C H OH HO CH2CH3 CH3 CH3 ČH2CH3
Use your molecular modeling kit to determine the absolute configurations of the d following compounds. Define each stereocenter as either (R) or (S). If the molecule does not have a stereocenter select "achiral". (For extra UNGRADED practice, you could name these compounds fully.) H H. CH2CH3 H3CH2C CH3 HO CH2CH3 CH3 OH CH,CH3
Use your molecular modeling kit to determine the absolute configurations of the following compounds. Define each stereocenter as either (R) or (S). If the molecule does not have a stereocenter select "achiral". (For extra UNGRADED practice, you could name these compounds fully.) E A OH HO CH3 H3C- Но H3C- -CH3 H3C- -CH3 H3C- -HO- HO CH3 H. OH ČH3 E: G: A: C: F: H: B: D: Use Your molecular modeling kit to determine the absolute configurations of the
to Medical Chemistry II. (BMC1CHEM02) oard / My courses / Introduction to Medical Chemistry II. (BMCICHEM02) / 29/03 2021 Chemistry Electronic te Electronic test in Chemistry n3 Cyclobutane is more stable molecule than cyclopropane, because.... Select one: ut of it has less angle strain. cyclobutane has a cis-trans stereoisomers. cyclobutane is a larger ring. it has more torsional strain. cyclopropane is planar. Next page
Consider the derivative of cyclohexane A and its representation in chair conformation B: 7 3 H3C $1 Ń 4 9 1 2 Complete Structure B: 3 4 5 6 7 8 9 HO 10 AT Choose... H OH electron lone pair CH3 CH2OH Choose... Choose... Choose... Choose... F Choose... OH ◆ + ♦ ◆ H 10 B 6 5
For the compounds provided below. Identify the three stereogenic centers in the molecule and indicate R or S configuration designations. (HINT: Add your hydrogens and check for 3D positioning using wedge and dash when applies). H₂CO Dextromethorphan (cough suppressant)
Q2. Identify each of the following molecule as chiral or achiral. (By circling the chiral ones.) Write “meso" where it applies. (In other words, if it is achiral despite having chiral centers). н он NH2 H CH3 Но H3CƠ H H3CO H H HO" н он OH H CH3 H3C H
9. How many stereo centres are there in the following molecule? OH
Q4. Which molecule has (R)configuration? Explain your answer CH₂OH (A) ОН Hiito H₁ ОНС CH3 (B) H…. HO CO₂H (c) Haci HO C CH2OH ОН ОН (D) HIL NC CH3
Question 3: Please state whether each of the following molecules is chiral or achiral. If you believe it is achiral, indicate the element of symmetry [plane of symmetry or center of inversion] responsible for the achirality. H3C H3C |H3C OH Br Br -H H CI Br но H Н CI CI CI ОН НН ОН H CI ОН ОН Br- Br H3C. .H неи Н' С2Н5 Н CI CI Br >
Consider rotation about the indicated bond in the molecule below. Which Newman Projection formula best represents the most stable conformer of the molecule with respect to rotation about the indicated bond? [As noted below: there is no steric strain between -H and -Et that have a gauche, staggered relationship] H CH3 Br-C-C-CH₂CH3 H. H Br CH₂CH₂ 1 CH3 H CH3CH₂ H Br H₂C || H H₂C H Br H ||| Select one: OA. I O B. II O C. III O D. All conformers have identical energies. CH₂CH3 H NOTE CH3CH₂ H no steric strain