1. Chair Strain(a)Consider (1R,2S,3S,4S)-1,4-dibromo-2-(tert-butyl)-3-methylcyclohexane. Circlethe location (axial or equatorial) for each substituent in this molecule's most stable chairconformer.(b)(၁)Br1-Braxialequatorial*ButBuaxialequatorial"CH3CH 3axial equatorialBr4-BraxialequatorialDraw the most stable chair conformer, adding only the substituents (not thehydrogen groups of those stereocenters) onto the chair below.Complete the table below, indicating how many of each type of interaction ispresent in total for the most stable chair conformer as described in (a).gauche interactions between gauche interactions 1,3-diaxial interactionssubstituents and the ringbetween substituentsbetween substituents

Answered: Image /qna-images/answer/2ba614f3-1b33-4012-af01-51b2af1191ca.jpg

Answered: 1. Chair Strain (a) Consider…

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter6: Alkanes & Alkenes

Section: Chapter Questions

Problem 21E

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Consider (1R,2S,3S,4S)-1,4-dibromo-2-(tert-butyl)-3-methylcyclohexane. Circle the location (axial or equatorial) for each substituent in this molecule’s most stable chair conformer.
2. Chair Strain (a) Consider the following cyclohexane derivative. Circle the location (axial or for each substituent in this molecule's most stable chair conformer. F axial equatorial Br axial equatorial Bru CH3 Ph axial equatorial Ph CH3 axial equatorial equatorial)
Assign the stereochemical configuration (R or S) for each molecule. For this question, the priorities have already been assigned.
2. Chair Strain (a) Consider the following cyclohexane derivative. Circle the location (axial or for each substituent in this molecule's most stable chair conformer. (b) (c) ( F axial equatorial Br axial equatorial Br CH3 Ph axial equatorial Ph CH3 axial equatorial equatorial) Draw the chair conformer described in (a), adding only the substituents (not the hydrogen groups of those stereocenters) onto the template below. O Complete the table, indicating how many of each type of interaction is present in total for the chair conformer described in (a). gauche interactions between gauche interactions substituents and the ring between substituents 1,3-diaxial interactions between substituents (d) ( Draw the other conformer that results from a chair flip onto the template below. Ma the changes that happen in the chair flip, but don't make other changes. Only draw substituer
Predict the expected major product(s) of the following reaction sequence. ی ہیں میں قبر ہیں H 1. t-BuOK, t-BuOH 2. O3, CH2Cl2, -78 °C 3. MezS H OH OH + enantiomer H
13. Classify the pairs of molecules as not the same molecule, structural isomers, diastereomers. enantiomers or identical. Circle any molecules that are not achiral. (a) (b) (c) F X Br. H H HY CI "Br Br H H CI H3C Br H Br I I Br CI H Br CH H H CH3 Br
(a) (d) 5. Assign the R and S configurations for all stereogenic centers in the following compounds. BI H CH(CH₂)₂ KAMION WOH H₂C H CH₂ Br -H Br +H CH, (0) CH=CH₂ H+C₂0 -C=CCH₂ CH₂CH₂CH₂C1 CH₂CH₂CI H₂NH CH₂CH₂Cl CH₂CH₂CH₂OH H₂N CH₂CH₂OH CH₂
1. The cyclohexane derivative shown below exists primarily in its most stable chair conformation. Given this, indicate which positions (axial or equatorial) the indicated groups [(1)-(3)] would occupy in the most stable chair conformation. н (2) (3) a. (1) = equatorial; (2) = axial; (3) = equatorial b. (1) = equatorial; (2) = equatorial; (3) = equatorial c. (1) = axial; (2) = equatorial; (3) = equatorial d. (1) = axial; (2) = axial; (3) = equatorial %3D %3D %3D 2. Which structure shown below has a chiral center? -Br HO OH a. b. с. d. 3. Consider a Reaction Coordinate diagram for a one step reaction (not provided). Which of the following species would be the highest in energy? a. Intermediate b. Transition state c. Reactants d. Products
Consider 2-(tert-butyl)cyclohexane-1,3-diol: a) Draw all possible stereoisomers of this molecule. Determine which are chiral, which are achiral (meso), and clearly identify the enantiomer/diastereomer relationships between them. HO. OH 2-(tert-butyl)cyclohexane-1,3-diol b) For each unique diastereomer, draw its most stable chair conformation.
2. For the following structure: (1S, 2R, 4R)-2-chloro-1-isopropyl-4-methylcyclohexane a. draw both chair conformations for the molecule b. identify whether the more stable stereoisomer.
6. For each pair of compounds below determine whether they represent the same molecule, enantiomers, or diastereomers. CH H₂N H CH J OllinO 2||2 COOH C OH CH₂ OH NH₂ CH, COOH CH3 HO H₂N CH₂4 CH CCC COOH OH NH₂ NIIIIIC CH₂ H CH3 CH3 H₂N HO H₂N COOH CH OH 5- O J CH3 COOH O H CH₂ H COOH HO CH CH₂4 HOOC COOH ........ OH JCC H NH₂ NH₂ CH₂
what is the most stable conformation of (1R, 2S, 5R)-1,2,5-trimethylcyclohexane

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