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- Which alkene has (E) configuration? a. b. C. d.18. How many isomers does dichlorocyclobutane have? Consider both constitutional isomers and stereoisomers! A.2 B. 3 C. 4 D. 5 E. 62. formed. a. b. ) Predict the major organic product(s) for the following reactions. Draw all stereoisomers H₂SO4 CH3OH HBr
- Label each compound as aromatic, antiaromatic, or not aromatic. Assume all completely conjugated rings are planar. Å a. b. C. d.Answer the following questions about compounds A–D.a.How are the compounds in each pair related? Choose from constitutional isomers, stereoisomers, or identical molecules: A and B; A and C; B and D. b.Label each compound as a cis or trans isomer. c.Draw B as a hexagon with wedges and dashed wedges to show the stereochemistry of substituents. d.Draw a stereoisomer of A as a hexagon using wedges and dashed wedges to show the orientation of substituents.Problem 5.23 Which compounds are meso compounds? a. HO.. "ОН н b. он Он Br C. Br 5.
- Problem 5.20 Label the two stereogenic centers in dB re stereoisomers. ne. each compound and draw all possible CI a. rro OH Br CI ne b. B. Problem 5.21 Compounds E and F are two isomers of 2,3-dibromopentane drawn in staggered conformations. Which compounds (A-D) in Figure 5.8 are identical to E and F? im et wihr boe A mot Br omin oldne Br F BrProblem 5.24 Draw a meso compound for each of the following molecules. a. Br CI Br b. HO OH c. H₂N NH₂Rank the alkenes shown from least exothermic (1) to most exothermic (4) heat of hydrogenation. a. b. C. d.