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- CH3 OH 1.6 Which of these compounds are meso compounds and why? a. H3CH₂C HOC-C., но- HO H CH₂CH3 1 Гон H CH₂CH3 Symmetry achiral H H CH₂CH3 b. (H3C)₂HC CH(CH3)2 HOCH H Ho. H OH CH₂CH3 H OH CH(CH3)₂ X C. H3C. НО. НО HO H Ho H CH3 CH3 H -H CH3 symmetry achiral d. I Br H Br Br H CH3 + CH 3 X Br H 33. How many stereoisomers will each compound have? H H. 1. H3C-C-C-CH3 Br CI H. H НОН-С—С—с-с-сно ОН ОН ОН нн 3. H3C-C-C-CH3 4. Why is ibuprofen sold as a racemic mixture? I- 2.Which compounds contain stereocentres? I. 2-methylpentane II. chlorocyclohexane III. 3-methyl-2-butanol IV. 2-hydroxypropanoic acid Select one: O a. I, II O b. III, IV O c. I, III O d. II, IV
- The dehydration of 3- hydroxypropanal, CH3CH(OH)CH2CHO, givesa/an *.aldehyde alph gama-unsaturated alpha dalta-unsaturated alpha beta-unsaturated beta gama-unsaturated * In the following resonance effect CH, LLCH₂ CH₂-C-CH₂ || A.Form I is more stable than form II B.Form II is more stable than form I C.in (II) negative charge is present on electronegative oxygen. D. in (1) negative charge is present on electronegative oxygen. E. (A. and D.) F. (B. and C.) The more stable structure of (5 * cyclo octane is half-chair Ttue False 1 2 37) Which of the following is a meso compound? OH Н H3C CH3 H OH -OH Н.С. H OH -H -CH3 HO HO CH3 CH3 -H -HV. Determine the structure of each of the following compounds a) CjH₁2O₂ THD 10-12-15 2 Sadarb d) C₂H₁0. IHD= 8-14.1. CH₂-CR₂ T 4₂² 8 M3 -CAN- c) CieH₁ Bro IHD-10-1+1 = 4 CH₂-CH₂-O-CH₂-CHar Br Š malpler chce 4 Chemical shift (8, ppm) Cha-o- 2 2 CH₂-CH₂ 40 2 22 3.5 2 CR₂ 1 multiplet 20 TMS
- l Zain JO 4G 5:01 PM © 74% A exams.zuj.edu.jo Marked out of 2.00 P Flag question Time left 0:59:50 How many enantiomer does the following compound has? СНО H ОН H HO- ОН H- ОН CH,OH Оа. 15 O b. 4 Ос. 1 O d. 72 Which one is the major Cla, cat Fellz No₂ NC- X Eto Eta IN Cl Cl NO₂ Eto. >? EtQ D-NO₂ c) NC- CI cl yną₂ perrasses.For each organic compound in the table below, enter the locant of the highlighted side chain. CH3 - CH3 | CH₂ | C 1 CH3 - CH3 CH₂ — CH3-C CH₂- compound CH₂ - CH3 I CH CH₂- — CH₂ - CH₂ CH3 CH₂ 1 CH CH3 - - CH3- CH CH3 locant of highlighted side chain 0 0
- 1. Identify the circled protons or methyl groups in each molecule below as homotopic (H), enantiotopic (E), or diastereotopic (D).. CH3 H3C. H3C H3C CH3 H OH H H LOHWhich compounds contain stereocentres? I. III. Select one: II, IV a. O b. I, II О с. I, III O d. III, IV ОН II. IV. ОН CI ОНWhich structure is consistent with a 1 transition state? 2 CH3 CHs H.C CH 4 3