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- the stereo center in this molecule is ___. a. R b. S2. Circle all of the stereocenters in the molecules below. If there are none, write "None." a. Adrenaline b. Aspirin ОН c. Limonene d. Testosterone OH OH OH OH H totsIdentify the number of 1,3-diaxial interactions in the RING-FLIP structure of the molecule below (you must draw the ring- flip structure to determine how many of these interactions exist). Feel free to draw in any hydrogens that are not shown. Br H CH3 CH3 a. 0 O b.1 С. 2 d.3 е. д f. 5 g. 6
- 6. Use the molecule below to answer the following questions. a) Name the following molecule. b) Why is it necessary to provide R or S designation in order to clearly communicate molecular structure for this molecule? c) How many stereoisomers of this molecule are possible? Which of them are enantiomers to each other? Which are diastereomers? SH ICN5. How many different T systems does the following molecule contain? Circle each of the T systems. Give the number of TT electrons in each TT system.2. How many degrees of unsaturation does each molecule have? C,H14BrN C,H9CI
- 2) In the space below, draw all of the stereoisomers of molecule a. a) CH 3 H-C-F H-C-F F-C-H CH3Q1. Please answer the following questions with respect to this structure. но. a) What is the hybridization of all atoms in the molecule? b) There are two double bonds in the molecule. For each, indicate the correct stereochemistry, by circling E or Z.5. Draw the perspective structure of 1,3-dibromobutane and label any asymmetric carbon atoms with a start (*). Draw the mirror image for the compound and indicate the corresponding (R) and (S) configuration for each structure.
- A. Circle the following molecules that have the S configuration. CH,CH3 CH,CH3 H. H3C-- H. CH=CH2 CH(CH3)2 CH3 CH3CH, CH2 HO, 3 11. For each of the following molecules, determine the absolute configuration at every chiral carbons. H O OCH3 VOH H OH H₂NShown are two stereo representations of lactic acid. Compare the two structures shown. Determine whether they represent identical molecules or mirror images. СООН COOH HO. CH3 H3C H Determine the absolute configuration of the two structures. Left: O Right: