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- 3. Indicate if the following molecule has an Ror S configuration. CH3 HOIC CH2CH3 Atomic #'s & Masses: Carbon: 6, 12.01g/mol Oxygen: 8, 16.00g/mol H: 1, 1.01g/mol 4. Answer questions for the following molecule: a. Circle any/all chiral centers. b. Is this molecule chiral or achiral. ICI CIH ÇI CH3-C-COOH он CH3-C-CH2Br 1. ČI a b 81. Consider the structures above. Which of these two contains a stereocenter? Draw thestructure on your answer sheet and mark the stereocenter with an asterisk. 82. Which of these two is a chiral molecule? Explain your answer. 83. Which of these two can exist as a pair of enantiomers? 84. Draw the pair of enantiomers using three-dimensional representation.Determine the number of chiral center(s) is /are present in the molecule below: 0 0 0 0 a. 3 O b.2 OC.4 d.5 H Type here to search HO СООН OH O II (((
- b. Put a star next to every chiral carbon in the molecule XA HH3C. ОН 2 'H 3 H 4 H3C NH, How many chiral carbons are there? [ Select ] Is the molecule chiral? [ Select ] What is the configuration on C2? [Select ] What is the configuration on C3? [Select ] Does the molecule have a meso isomer? [ Select ] How many stereoisomers does the molecule have (including the one already shown)? [ Select ] If the -H and -OH on C2 switched places, the new compound will be [ Select ] with the original compound. What is the second priority substituent on C3? [ Select ]Indicate whether each of the following molecules are chiral or achiral. Circle the chiral carbon(s) if present in the structure. CH 3 H. C=C%3DC%3D0 H3C BICH 2 C CH2CH 3 CH3 H. b. С. a.
- a) Which structures are Enantiomers? b) Which structures are Diastereomers? c) Which structures are meso compounds? Use the letters only for your answers. А. В. H H CI H H Cl C. H H D. H Cl ČI Cl CI HShown below is 3-fluoro-2-butanol. What is the configuration of the chiral centers? OH H. F *CH3 CH3 O 1. The configuration is (25,35). O 2. The configuration is (2R,3R). O 3. The configuration is (25,3R). O 4. The configuration is (2R,35).How many chiral carbon centers are there in the analog of morphine shown below? HO. HO O a. Three O b. Five c. Four d. Two H CH3
- Naming Organic structures: Only use naming systems specially covered in this course, do not use common names 1. Assign a name to each of the following monosaccharides. Use D and L designations. CH₂OH | C=0 a. b. C. a. H- -OH -OH CH₂OH d. True or False: -H b. H-C-OH HO-C-H T CH,OH Circle all chiral centers for the monosaccharides shown. The molecules shown can rotate plane polarized light?Q4: a: Assign the absolute configuration of all chiral centers in molecules B and C by writing R or S directly adjacent to the chiral carbon. COOH COOH COOH ÇOOH ÇOOH H- HO- но H- H. HO- но H. но HO. H- OH но -H- но H. HO- H. COOH COOH COOH COOH COOH A C b: List any pairs of enantiomers: c: List any pairs of identical molecules: d: List any pairs of diastereomers: e: List all meso compounds: f: List all dextrorotatory compounds:.. O 2. Give the molecula formula for the following compounds and star the chiral center(s) in each one of them if there is any. HO NO2 HS N' HOOJ HN Но H. CH3 followingnotegu F. HOO) HO, CH3 HOO). N. ఆరింది 3. Define chiral and an achiral molecules. 4. Define structural (or constitutional isomers). Draw as many constitutional isomers as possible with a molecular formula of C6H14 5. Define stereoisomers and give an example of two stereoisomers (draw them in line-angle notation). 6. Define diastereomers and give an example of two diastereomers (draw them in line-angle notation). 7. Define enantiomers and give an example of two enantiomers (draw them in line-angle notation).