2-chloro-3methylbutane (show all confirmations) 1) looking down the C1-C2 bond 2) 1 staggered confimation looking down the C2-C3 bond 3) Label all and rank all from least to most stable.
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2-chloro-3methylbutane (show all confirmations)
1) looking down the C1-C2 bond
2) 1 staggered confimation looking down the C2-C3 bond
3) Label all and rank all from least to most stable.
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- Draw the Newman projection for each of the following species, looking down the bond that is indicated in red. (a) H (b) НО (c) НО CH3 H (d) CH3 CH3 H CH3 H Br H C(CH3)3 CH3 Br H H (e) (f) H (g) CH3 (h) CH3 CH3 OH H3C H H. Br H. Br HQ1. (a) Give a systematic (IUPAC) name for the following compound. HINT: Convert to bond-line structure first. Show your work. (b) Draw anti and gauche conformations looking down the C3-C4 bond. Name: Newman Projection about C3-C4 bond Anti Conformation Gauche conformationWhich conformer(s) below represents highest energy staggered conformation of 2- methylbutane? H H CH3 CH3 I 1 || H ||| CH3 I and II CH3 Ø H₂C H II H CH3 H H CH3 H III CH3 CH3
- 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... ◆Q2. a) Draw the Newman projection of the most stable staggered conformation of 2-methylpentane, looking down the 3,4 bond. H3C c-CH2-CH2CH3 H3C´H b) The structure of cis-1-tert-butyl-3-methylcyclohexane is shown below. Draw both chair forms of this molecule, and circle the one you think is less stable. Me 't-BuI H. H H. H Identify the Newman projection that depicts the eclipsed conformation of butane. CH3 I H CH3 H CH3 H CH3 || IV `H I H H H CH3 H H V H3C CH3 J HH H CH3 H -H CH3 FH CH3 A) I B) II C) III D) IV E) V
- 6. Newman projections to Lewis structures From the following Newman projections, draw the corresponding Lewis structure in the same conformation. A) B) H. H CH3 H₂C N H OH CI Br CH3 H OH CH36. Which of the following has a C-H stretch that occurs at the lowest stretching wave number?? C) 1-hexyne D) hex-2-yne E) all have A) hexane approximately the same stretch B) 1-hexene 7. rWhat is the IUPAC name of CH,CH,OCH,CH,C1? A) 1-chloro-i-ethoxyethane B) 1-chloro-2-ethoxyethane C) 1-chloro-1-ethoxyethane D) 1-ethoxy-1-chloroethane E) C& D2. i) Arrange the following Newman projections of butane in order of their energy level ii) identify the most stable among them. CH3 HCH3 CH3 H H3CCH3 H Н. IV H H₂C H HI 11 CH H H III CH3 H
- a) b) 4. Assign the absolute configuration of all molecules. Draw the most stable conformer in Newman projects with respect to bond C2-C3; for both a) and b). Draw Fisher projections for all molecules.. F H CI CI 2 2 2 3 CH3 3 3 CH3 CI H H configuration C2 configuration C3 tafa configuration C2 configuration C3 taleConsider 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 CH3draw Newman projections of the highest and lowest energy confirmations associated with the CH2-CH2 Bond in the compound below (put the end containing fragment on the front carbon; Condensed structural notation is fine) name and include A dihedral angle for each of your confirmations (CH3),N°