2. i) Circle each stereogenic unit in the Structure provided and write its label directlybelow the unit (alkene → (Z) or (E); chiral center → (R) or (S); substituted cycloalkanering lacking chiral centers → cis or trans).ii) Write C in the 1st box if the structure is Chiral (has an enantiomer) or A if it is Achiral.iii) In the 2nd box write the # of diastereomers of the structure provided.Structure (circle and label)Chiral or achiral# of DiastereomersLABELSHH

Step 1: Step 2: Step 3: Step 4:

Answered: 2. i) Circle each stereogenic unit in…

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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4. - Determine the structural relationship between the compounds in each of the pairs that follow. They may be unrelated, identical (the same compound), constitutional isomers, diastereoisomers, enantiomers? - Identify the optically active (chiral) compounds and any meso compounds. - Assign a configuration (R or S) to all stereocenters. - Name all compounds so that the name reflects the structure unambiguously. a) b) c) d) e) f) H- HO- CHO H3C -NH₂ H- -H H- CH2OH H CH3 CH3 H Ph H CH3 H H CI Ph H H CI CH3 CH₂OH -OH -NH₂ CI H H CI & t OH CHO H3C H OH O-CH3 oma O-CH3 H3C OH
Draw a structural formula for trans-1-bromo-3-isopropylcyclobutane. • Show stereochemistry only if given in the name. • Include H atoms at chiral centers only. • If a group is achiral, do not use wedged or hashed bonds on it. • In cases where there is more than one answer, just draw one.
The structure of 4 isomers of an aldotetrose carbohydrate are given. 1) select every structure that is a diastereomer of structure D A, B, or C? 2) select every structure that is a enantiomer of structure C D, B, or A? 3) select every structure that is a stereoisomer of structure D A, B, or C
Draw mirror images for these molecules. Are they different from the original molecule? (a) (b) • Use the wedge/hash bond tools to indicate stereochemistry where it exists. Include H atoms at chiral centers only. • Use the "flat" representation of rings in your drawing where appropriate. ● HO ||||| O different O the same Sn [F ? ChemDoodleⓇ
(v) Identify every chiral center in cholesterol (below) with an asterisk. HO (vi) Draw an energy vs. dihedral angle diagram that represents all the conformations of butane starting from the anti-conformation. (vii) Draw both chair conformations for the compound shown below using the templates provided. Circle the chair conformation that is lowest in energy. Br (viii) Draw a chair conformation that meets the following criteria. Axial chlorine at C5 Equatorial methyl at C4 Bromine on C2 that is cis to the chlorine 6 2 5 3 4
Draw a structural formula of the S configuration of the compound shown below. CH₂CI [Referer • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • Include H atoms at chiral centers only. •If a group is achiral, do not use wedged or hashed bonds on it. n ? ChemDoodle
(2 3 C. (a) Construct four models of the compound CH,CHCICHBRCH3. Take two models and hold them with the two CH3 groups away from you. Now arrange the CI on C-2 and the Br on C-3 so that both groups are on your right on one model and both are on your left on the other model. Test to see if these models are superimposable or are enantiomers (mirror image isomers). Draw projection formulas for these models. If they are the same, only one structure needs to be drawn. If they are enantiomers, draw both structures as mirror image isomers.
2. Identify the type of stereoisomerism in each of the following molecules and draw the stereoisomer pair. (a) CH;CH=CHCOH (b) CgH;CH2CH(NH2)CH3
Does methylcyclopentane have a stereogenic center?
Using a planar pentagon representation for the cyclopentane ring, draw structural formula for trans-1,2-dimethylcyclopentane. • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • Include H atoms at chiral centers only. • In cases where there is more than one answer, just draw one. • Do not include lone pairs in your answer. They will not be considered in the grading. opy aste C. O O O- [* ChemDoodle I...
I'm confused as to why the chiral centers are the was they are. I understand that the horizontal lines are wedged and vertical are dashed. Wouldn't the first priority be the carboxylic acid, then alcohol, the carbon, and then the hydrogen? The book is saying that one method is to keep two of the straight lines and pick one group to be dashed and one to be wedged. Then switch the last priority group (H) with whatever group you chose to be on the dash. Whatever configuration you get, make it the opposite since you switched groups. And when I use this method I end up getting S when the top one should be R.
True or False: 1. The eclipsed conformation of a linear alkane IS called cis, while the anti conformation of an alkane IS called trans. 2. In the conversion of open-chain D-glucose to the ring form, the aldehyde carbon (carbon #1) bonds to the oxygen on carbon number 5 to form a ring that is both PYRANOSE and UNLOCKED.

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