Q6. Encircle the structures of all the chiral molecules drawn below and assign absolute configuration (R/S) to all the chiral atoms. Draw the Fischer projections of the enantiomers of all these molecules except epoxides. OH OH OH CH, CH, CH H,C H,C H.C OH OH CH, H,C CH H,C CH.
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- Draw and name the seven aldehydes and ketones with the formula C5H10O. Which are chiral?5. Consider the following pairs of structures. Identify the relationship between them (enantiomers, diastereomers, or identical compounds. HOH2C H OH H OH HO H Br H3C Н H H₂CH₂C CI Br H CHO CH3 I CH3 OH OHC Н H OH H OH Bell!! H3C, HO H Н.С H CH₂CH3 CH3 CI HỌ,H CH₂OH Br- entel® ZEH10 Ⓡ raser de haute qualité de calidad superior CHO AP S a) Assign the absolute configuration of the chiral carbon in Compound Q below. Br Compound Q OH b) When Q is treated with an oxidizing agent, it forms Compound P. (The alcohol is oxidized to a carboxylic acid.) Assign the absolute configuration of the chiral carbon in Compound P. Br OH oxidation Br OH c) If you did a) and b) correctly, the chiral carbon should have changed its absolute configuration even though it was not involved in the reaction. Explain what happens.
- Q1. Draw the enantiomers for the following molecules and assign all chiral centres as R or F |C(CH3)3 -PH2 CHO Br CH2OH H5. Consider the following pairs of structures. Identify the relationship between them (enantiomers, diastereomers, or identical compounds. он HO o CH,OH H,C H но CH,OH сон H HO. HO CH, HO,C CH COH HO,C, CO,H CO,H н онн он н онн он HOH,C сно OHC CH,OH Br CH,CH, H,CH,C CI CH OHTwo 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
- 4. For each pair of molecules, assign the configuration at each chiral center as R or S. Give the relationship between the pair of molecules as no relation, constitutional isomers, same molecule but not meso, same molecule and meso, enantiomers, or diastereomers. There should only be one possible answer. a. OH OH b. Br Br с. NH2 NH2 NH2 NH2 d. HO НОVII. Place asterisks at all the chirality centers in the molecule below. O || CH;CHCNH NH₂ cephalexin N S. CO₂H CH3Determine and label the configuration of each chiral carbon in the molecule shown below. HN B O FI OH The molecule shown below is the synthetic drug Latuda (Lurasidone) that is prescribed for antipsychotic for the treatment of schizophrenia in adults and adolescents (13-17 years). Examine the molecule carefully and answer the following questions. H 'N (S) H INH (R) (S) (R) IH H (S) O (S) a) Identify and label the functional groups in the molecule. b) Confirm the configuration of each stereogenic (R/S) center the molecule. c) Label the hybridization of all the nitrogen atoms in the molecule d) Circle of the most basic atom in the molecule and estimate the pKa of the conjugate acid of the base.
- Two 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 H3C CH3 O Neither. There are no asymmetric carbons in compound A. H3C -CH3 H3C CH3 Compound A is . There are stereocenters in compound A. Which image shows the asymmetric carbon(s) in compound B highlighted in red? 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 questionsa. C1- C3- For each chiral carbon labeled in the structures below (see the numbers), assign R or S absolute configuration in the boxes provided - you only need to enter R or S. Then, state (in the box provided) whether the molecules are enantiomers, identical, diastereomers, or not related. 0 OH OH 2 OH X 3 and 1-44 C2- C4- OH and OH 2 Related- hpQ4: 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:
