CHEM 22111, Stereochemistry Chiral vs Achiral continued - Label each mon Label each molecule as chiral...
1. (23 pts.) Label each stereocenter (chiral center) as Ror S. Label each molecule as chiral or achiral. CH ен-он H- CH3 . Он CH2OH Сн,он h) н он В ньон нон НО-Б-н ен,он но- н H-LOH CH OH
Disubstituted Cyclohexanes Chem 2511/2611 - Chapter 4 Draw both chair conformations for each cyclohexane molecule. 2. On each chair conformation, label the methyl groups as axial/equatorial and upkdown. 3. Label the lowest energy contormation if there is one. Cis or Trans Cyclohexane Chair Conformations 2
Label the chiral centers in the below molecule as (R) or (S) in the boxes provided and clearly indicate your priorities of groups attached to each of the chiral centers (see arrows). (8 points) CH3 CH-CH3 CSH Fhimu HO CHE
20. Name these compoands CHy 21. Draw chair structures for each of these compounds. Label cach substituent as axial or equatorial. trans-1,2-intethylcyclohexane cis-1.2-dimetlylcyclohexane 22. Draw a chair conformation of cyclohexane with one CH,CH: gruup and ene Clls group that fits cach description. 1,1-disubstituted cyclohexane with an axial CHCH: group cis-1,2-disubstituted cyeloliexane with an axial CHs group trans-1,3-disulstituted cyclohexane wilh an equatorial Cli, group trans-1,4-disubistituted cyclohexane with an equatorial CHCiH: group
how does the structure on thr bottom left have 2 stereocenters? I see both Carbons in the CH3 being bonded directly to a H, -CH2 and another -CH3. i do not see how there are 4 different groups that each chiral carbon is attached to os structures are show cand trans molecules srent sequence of groups ul (CH3) group and les initially, a-CH- ction gives, initially, a aded to four different 1,2-Disubstituted Cyclohexanes Now consider 1,2-dimethylcyclohexane. The cis and trans...
Identifying Stereochemical Relationships and Assigning Stereochemistry 1. Follow the instructions provided to indicate the relationship between the structure in the box and those shown underneath. HECH CHE CH,CH a) Write "a" in the blank below each molecule that represents the enantiomer of the one in the box. b) Write "b" in the blank below each molecule that represents a diastereomer of the one in the box. c) Write "e" in the blank below each molecule that is the same as...
Make a model of each of the chair conformations of cis-1,2-dibromocyclo- hexane, and show that they are nonsuperimpoasble mirror images of each other. Is cis-1,2-dibromocyclohexane isomer optically active? The planar structure has a plane of symmetry, but the chair conformation doesn't! Yes _No Although each conformer is chiral, the rapid interconversion between the two at room temperature means they cannot be separated. The compound is not chiral. Identifying chirality in cyclohexane derivatives can seem daunting. Fortunately we can greatly simplify...
For each molecule, indicate whether cis-trans isomers exist. If they do, draw the two isomers and label them as cis and trans. a. CH3 - CH2 -CH=CH, b. CH3-CH2-CH=CH c. 2-Pentene d. 1,2-Dichloroethene
6. For each of the molecules below (A-D), determine whether the molecule is chiral, achiral, meso, or none. Be as specific as possible. (4 pts) CH3 CH3 CH3 CH2CH3 Bry CH₃ наслесна | HCBr CH2CH3 CH3 CH3 AB H3 CH3 HO CHARY 7. Consider isomers that contain a cyclopropane ring and have the molecular formula C5H10. (10 pts) a. Draw three (3) structures that would be included in this class of isomers and are achiral. Note: points will be deducted...
Provide a mechanism that leads to the E2 elimination product(s). Pay close attention to the stereochemistry and provide a name for the elimination product(s). 6. H .CH3 CH3ONA Br CH,он CH3 н Provide a detail explanation of how Zaitsev product and Hoffman product is formed. Give examples of both using a substrate and proper reaction conditions.. 7. Follow the instructions in Problem 7-13 on page 306 of your textbook. Additionally, provide mechanisms that lead to the products. 8. For each...