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- „Deuce thenergy to the table below. wwce between the conformers of compound X by referring CH, Compound X H,C- H.C Support your answer with drawing of conformer(s) and work out caleulations. Energy cost by. He CH eclipsed 13-diaxial (H»CH) strain 1.3-diaxal (CH++CH) straun Energy (kJ mol) 6.0 3.8 154 Identify which of these contormers give the most and the least stable conformmations.Consider compound Q shown below (trimethylcyclohexane isomer). compound Q Which of the following is the most stable conformation of compound Q? I ||| CH3 Select one: O A. II OB. I O C. III O. D. IV H CH3 H CH3 H H- CH3 CH3 H CHS ||| H IV CH3 H CH₁ CH3 fff, H CH3 CH3 CH3WS-3.7: For each Newman projection present in the conformational analysis of butane, draw a corresponding structure in Sawhorse notation. (No need to draw the conformational analysis chart, just the structures.) COR
- 2D Representations Conformation Newman Sawhorse projection projection 1. 2. preferred (most stable) chloroethane 3. 4. least stable 5. preferred (most stable) 1,2-dibromoethane 7. 8. least stable 6.We consider the following molecule A: And. THIS Of the following Newman projections, indicate: MeEt F F Me 1 Br 5 Br F And Me THIS CH2CH3 AT CH2CH3 "CH3 Br Br Me Me. THIS 2 Br 6 And And .And And Br CI Me F And 3 F And 7 Me the one that corresponds to the least stable conformation of molecule A: And Br And the one that corresponds to the most stable eclipsed conformation of molecule A: CI Me THIS And Br And Br F F And Me And Choose... Choose... the one that corresponds to molecule A as seen by the eye of the observer in the statement: Choose... the one that corresponds to the least stable staggered conformation of molecule A: the one that corresponds to the most stable conformation of molecule A: Choose... Choose... ◆WS-3.26: Assign the absolute stereochemistry in the following molecules and then draw the enantiomer of each compound. OH 1. 2. 3. 4. d. Enantiomers: Enantiomers are stereoisomers that are non-superimposable mirror images. They can have one or more asymmetric carbons, but the absolute configuration at all stereocenters is flipped in its enantiomer. Let's begin with visualizing the enantiomers of molecules containing just one stereocenter. 5. H3C Br CH₂CH3 H OH XH CH3 OH C₁ CH₂ CI H H NH₂ H CH3 H3CH₂C,, H CH3
- (b) Consider the following substituted cyclohexane: NH, Br i. Draw the alternative chair conformations of the cyclohexane compound, shown above. List the unfavourable steric interactions for each chair conformation and determine the more stable conformation of the compound. ii. For each conformation in b(i) above, draw the Newman Projection viewing down the C1/C2 bond. ZI -Student Name: 5. 6. 7. Draw the most stable chair conformation of the following disubstituted cyclohexane. Also, Identify whether this conformation is cis or trans. steoisoers from olecule Classify each reaction below as oxidation, reduction, or neither. OH nt of a mixture mine whether a mol OH Symmetric center at the mater enser would occupy. midure would be optica ems to Pin Practice (Sections 7-13) aton OH anest COROPES 210 Draw a new chair conformation that would occur if the chair conformation below went through a ringto 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 (1R, 2S, 3S)-1-bromo-2- chloro-3-fluorocyclohexane, shown below. The most stable conformation of (1R, 2S, 3S)-1-bromo-2-chloro-3- fluorocyclohexane has... Bromine equatorial, chlorine A equatorial, fluorine equatorial Bromine axial, chlorine В equatorial, fluorine equatorial Bromine equatorial, chlorine C equatorial, fluorine axial Bromine axial, chlorine D equatorial, fluorine axial Bromine equatorial, chlorine E axial, fluorine equatorial2. 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.Will you always have a stable Newman chair? For example you have a cyclohexane and on 1 and 2 you have wedge methyl coming out and 4 and 5 you have dash Cl. What would the stable chair be. I think there is none