6. What is the correct order of the Cahn-Ingold-Prelog ranking of the following substituents as used in assigning R and S configurations of chiral centers? (higher ranking > lower ranking) 1. -C=CH 2. -CH2NH2 3. -NHCH3 4. -CN
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- Q1. Draw the enantiomers for the following molecules and assign all chiral centres as R or S: F |C(CH3)3 PH2 Сно H- Br ČH2OH H. Q2. Label all stereogenic centres as R or S. No explanation is required. CH3 CH2CH3 H. D INH2 N(CH3)2 H3CH2CO- OCH33. Give the relationship between the following molecules. Your options are enantiomers, diastereomers, or the same molecule. Determine R/S configurations of any chiral a. b. C. centers. H₂C-Si- H H CH3 COOH H -OH H-OH H -OH CH₂OH H₂ Br CH3 CO₂H Br H CH₂OH and HO H- HO H CH₂OH H -ОН H COOH and H₂C H H- Br Si CH3 CH3 CO₂H -Br -H CH2OHI. Given the following compounds: а. НО-СН2 — СH— СH | b. CH3- CH2 – CH OH į. ii. Determine and give the number of chiral carbon Draw the stereoisomers ii. Identify the enantiomers Identify the diastereomers iv.
- What is the correct order of the Cahn-Ingold-Prelog ranking of the following substituents as used in assigning R and S configurations of chiral centers? (higher ranking > lower ranking) A. −C≡CH B. −CH2NH2 C. −NHCH3 D. −CNLABEL CHIRAL CENTRESa.2,4-dimethyl heptane b. CH3CH2CH2 CH(Cl)CH3 c. CH3C(OH)(H)(COOH) d. CH3CH2CH(CH3)(H)CHC=CH2 e. CH3 CH2C(CH3)2CH2CH3Two structures are shown. Identify the asymmetric carbons in each structure, classify as chiral or achiral, and identify the number of stereocenter(s). H. „CH3 H3C CH3 H H. CH3 compound A compound B Which image shows the asymmetric carbon(s) in compound A highlighted in red? CI H H3C CH3 H,C CH3 O Neither. There are no asymmetric carbons in compound A. H. H3C -CH3 C H3C CH3 Compound A is . There are stereocenters in compound A. Which image shows the asymmetric carbon(s) in compound B highlighted in reď? .CH3 H H. CH3 H3C.C H O Neither. There are no asymmetric carbons in compound B. Compound B is There are stercocenters in compound B. *Please explain all the questions
- 5. Consider the following pairs of structures. Identify the relationship between them (enantiomers, diastereomers, or identical compounds. H3C OH H₂C HOITY H CH₂OH HO HO C,, CO₂H вой HOH2C CH₂ OH H OH H OH Н HO H H COzH Br Д H3C Br H₂CH₂C CI H CHO CH3 I CH3 OH HO Н HO... HO C OHC Н H3C, Bell!! H CO₂H Н.С CH₂OH H OH H OH HO H CH₂ CO₂H HỌ,H CH₂CH3 CH3 CI CH₂OH Br5. Assign R or S configuration to each chirality center in the following molecules: CH3 CH3 Br (a) Br (b) (c) HaCH3 HaBr H OH CH3 H3C H OH H CH3 OH Which of these compounds are enantiomers, and which are diastereomers?2. For the following pairs of molecules, determine if their relationship is enantiomers, diastereomers, or the same compound. Assign R/S configuration to all chiral centers, if applicable. ➤ > CH₂ H₂CH.. off off
- HO H. a) Provide the R-S configuration for each of the following chiral centres. b) Provide the drawing and R-S configuration for one diastereomer of the above molecule. c) Bonus: Come up with a molecule that is a constitutional isomer of the above molecule and has the same amount of chirality centres and R-S configurations. For example: if the above molecule has 10 R and 10 S chiral centres, provide a constitutional isomer that also has 10 R and 10 S chiral centres.E). Provide the absolute configuration of each chiral center (R, S or none). i) Lowest CIP priority group back (4) H (3) cew (3) (s) (1) CI н (ч) (3) (8) (3) H(4) a (¹) F (2) (s) (NH₂ (4) H (5) (9) (25) C (R) (4) Koy (2) (R)6. For the following structures shown below: (a) Identify all chiral centers with an asterisk; (b) Identify each structure as being chiral or achiral; (c) Assign (R) and (S) configuration at each chiral center. Show priorities using numbers and then an arrow showing the direction of the priority ranking. (d) Identify any meso structures, and any planes of symmetry. Bc Haçso (2) H. CH3 CH3 (3) 1.