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- C5H8 has two elements of unsaturation (right?), which may indicate the presence of either double bonds or triple bonds or rings. Show all the possible structures5. Draw the following molecules in two difference configurations about the double bond. Name the molecules and be sure to include the appropriate configuration (trans or cis). If the structure cannot be drawn in two different configurations. explain why a. H2C=CH2 b. CH3CH=CHCH3 с. CI(CH3)С-СHCH310) Draw constitutional isomers of the compound below (CsH10O2) that meet this indicated criteria. OH 1012 times (much!) more acidic Less acidic
- 2. Draw the structural formula for the following molecules: 4-sec-butyl-5-ethyl-5-isobutyl-6-isopropyl-2,7-dimethyl oct-2,3.6-diene а.Draw all three possible structures of benzene containing two methly (-CH3) substituents.Which of the following structures would be non-aromatic? a) 1 b) 2 c) 3 d) 1 and 3
- 2. Convert the following bond-line structure to Newman projections that represents it lowest energy and highest energy conformations. Look down the indicated C2-C3 bond. lowest energy highest energy4. a) Calculate the units of unsaturation for the formula C6H10O2. b) Draw a structure of C6H1002 that has no formal charges and a) ester and ring b) carboxylic acid lotfasss.com 5. A student tried to draw the most stable conformation of the molecule shown below. What is wrong with the Newman projection that they drew? view OCH 3 H H H 6. A student tried to draw one of the chair conformations of the molecule shown below. What is wrong with the chair that they drew? H3C Student answer for most stable Newman Projection H3C. CH3 H OH TH H H H UU .H OCH 3 has: c) ketone and alcohol H 7. Which type(s) of strain are present in the following molecules? (steric, torsional, angle, etc) H H O H H H H H H(c) (d) CH;CCH;C,H;Br which of the following pairs A is more stable than B? A В (a) (b) (c) (d) Ph;C°,(CH3 ,)C* 58. POCEE SHOT ON POGO M2 Some important polymers are given. Which one represents Buna S?
- 39. Calculate the degree of unsaturation in the formula below. Show your calculations. C»HuBr 40. Draw the molecule (1E,3Z,6E)-1-chloro-3-methylocta-1,3,6-trieneÞraw the structures for compounds AA through E: PBr3 t-Buo- 1. OsO4 H2SO4 H2SO, E 2. H2O2, H20 pyridine H20 heat но,4. Two compounds A and B isolated from plants have the following chemical data. Determine the their structures from the data provided (and give the structures of their derivative C) A H2 C 1. Оз C15H28 А, С15Н24 C15H24 Pd/C H 2. NaHSO3 В H2 C H. C15H24 Pd/C C15H28 A HBr Br 1. Оз В, С15Н24 C15H24 2. NaHSO3 В Br HBr C15H24