Chapter 12, Problem 3CTQ

Organic Chemistry Maxwell presented by Macmillan Learning Classify the pair of compounds as the same compound, enantiomers, diastereomers, constitutional isomers, or not isomeric. Also, select the correct IUPAC name, including the correct (R) or (S) designation, for each. H3C H CH3 H3C. CI. CI H3C Compound 1 Compound 2 The compounds are O enantiomers O identical O diastereomers O constitutional isomers O not isomeric The correct IUPAC names are: O Compound 1: (2S,3R)-2,3-dichlorobutane Compound 2: (2R,3S)-2,3-dichlorobutane O Compound 1: (2R,3R)-2,3-dichlorobutane, Compound 2: (2R,3S)-2,3-dichlorobutane O Compound 1: (2S,3S)-2,3-dichlorobutane, Compound 2: (2R,3R)-2,3-dichlorobutane O Compound 1: (2R,3S)-2,3-dichlorobutane, Compound 2: (2S,3R)-2,3-dichlorobutane 48°F Light ra F5 F6 PrtScn Home End PgUp F7 F8 F9 PgDc F10 F11

[Review Topics] References] Indicate whether the pair of structures shown represent stereoisomers, constitutional isomers, different conformations of the same compound, or the same conformation of a compound viewed from a different perspective. Note that cis, trans isomers are an example of stereoisomers. CI H. H H. H H CH3 H CH3 same conformation CI CI C/ Cl constitutional isomers 6 more group attempts remaining Retry Entire Group Subாit Answer Next Save ond Exit 9:50 PH )E 10/29/20 H

F) Circle the letter corresponding to the relationship of each pair of structures: Identical (I), Conformers (C), Enantiomers (E) (enantiomers can have different conformations). FIRST... determine the absolute configuration of chiral centers. H | F OH C H OH E

3. Draw a ring-flip isomer for the following compounds and circle the most stable conformation.

Stereoisomers are isomers that differ in spatial arrangement of atoms, rather than connectivity of atoms. Stereoisomers have different properties, especially in biological systems. Which is the stereochemical relationship between this pair of molecules? OH "OH 8p OH OH ...||| 4 A) enantiomers B) diastereomers C) identical compounds D) constitutional isomers E) Not isomers

Indicate whether the pair of structures shown represent stereoisomers, constitutional isomers, different conformations of the same compound, or the same conformation of a compound viewed from a different perspective. Note that cis, trans isomers are an example of stereoisomers. CH3 CH3 CI CI H H H. H CH3 H. H' H. CH3 Submit Answer Retry Entire Group 6 more group attempts remaining (Previous Next Save and Exit Cengage Learning | Cengage Technical Support MacBook Air DII 888 F12 F10 F7 F4 & 9 delete - 4 5 6 8 { т Y U P F G J K 1r command eption .. ..

Answer the following questions and upload your answer. A. Draw the two chair conformations of cis-1-isopropyl-3-methylcyclohexane. Write under your drawing which conformation is the most stable one. B. Would the trans isomer be more stable than the cis isomer? Why?

1. The structure shown below is a dioxane, and it exists in a chair conformation just like cyclohexane. The specific compound is cis-2-methyl-5-tert-butyl-1,3-dioxane. Draw the two chair conformations of this compound. Surprisingly, the conformer with the tert-butyl group in an axial position is preferred. Circle the preferred conformer. In one sentence or less, explain of this observation. C(CH3)3 CH3

Consider the pair of compounds shown below then select the word or phrase that best describes the relationship between them.. Me H OH H Me OH and H OH Me Me They are diastereoisomers, but differ in their conformations. O They are constitutional isomers that, by definition, differ in their conformations. None of these are accurate. They are identical, but differ in their conformations. O They are enantiomers, but differ in their conformations.