15 uestion 25 Assign the Ror S configuration to each stereogenic center in the Fischer projection...
4. (4 points) Assign absolute configuration (R or S) to each stereogenic center of the molecules shown below CH ОН ny NH2 OH
3. Assign Ror S configuration to the following molecules: Br 1 F H- F H F Br Br -CHO CH=CH2 S R R H CH2CH3 CH2CH3 --CH₃ CH3 CH2 H -CH=CH2 CH3 H3C HY -CH(CH3)2 OH
3. Assign R or S configuration on all chirial centers in each of the given Fischer projections. Then, draw the perspective drawing for each structure in the boxes below. Take particular care to indicate stereochemistry properly. 0 он HO- OCH HECH2CH2C HC Br HO H- I W OH H- a) CH₂ 6 CH₂OH OCH d) CH3 Perspective drawings:
3. Assign R or S configuration on all chirial centers in each of the given Fischer projections. Then, draw the perspective drawing for each structure in the boxes below. Take particular care to indicate stereochemistry properly. 0 он HO- OCH HECH2CH2C HC Br HO H- I W OH H- a) CH₂ 6 CH₂OH OCH d) CH3 Perspective drawings:
51. Label the stereogenic center as Ror S. 2 W3C-H It # Ниси, 52. Give the IUPAC name for the following: a. CH₂ CH₂ CH CH₂ CH CH₂ CH₂ CH₂ CH3 CH₂ 3 CH3 diyoewe cute e ac CH₂CH3 L Jun CH₂ CH₂ HTH CH, CH3 53. Draw the structure for a. 6-ethyl-2,3-dimethylnonane b. butylcyclohexane
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9. Assign the absolute (Ror S) configuration to the chirality centers in each of the following molecules (10 points). CHO HO- но -н CH.CH
Assign the R/S-configuration for each of the following "molecules" and convert each perspective drawing into a Fischer projection. For consistency, please place the highest priority group at the top position. (6 pts) Perspective Drawing R/S-configuration Fischer Projection
3. (4 points) Assign absolute configuration to each stereogenic center(s) in each molecule, draw an enantiomer of each molecule, and then indicate if each molecule optically active or optically inactive. (a) (b) Он но. но- Он CHS enantiomer enantiomer
10. Convert the following 3-dimensional molecule into a Fischer projection looking along the indicated line of sight. Assign an R or S designation for the absolute configuration to the chiral C. Is the molecule at the right the same or the enantiomer of the original molecule? NH2 NH2 HO CH3 OH HC H
4. (26 points) Identify each chiral carbon in the molecules below with an asterisk (*) and assign R or s absolute configuration to each chiral carbon. Then, state (in the box provided) whether the molecules are enantiomers, identical, diastereomers, or not related. Hint: if it looks like a Fischer projection then it is a Fischer projection. ...1111 O піон аnd and .Ley O Era o C CHO CH,OH C. H oH and OHCH IH Сн,он