2) (a) Determin Ctar (b) Propose a structure (5 pts 10 (5 pts) (5 pts) (a) Assign chirality (R/S) to appropriate atom(s). tb) Draw an enantiomeric structure andassien chirality on appropriate ato...
Assign R, S configurations to each indicated chirality center in the molecules below. B. COOH A. OH HOW -H CHANH HNCH HO norepinephrine alamine HOC / OH CH3 не HC HÓ COH tartaric acid CH2 dihadrocarpone The configuration of this carbon atom (A) is · (2 pts.) The configuration of this carbon atom (B) is _ . (2 pts.) The configuration of this carbon atom (C) is . (2 pts.) . The configuration of this carbon atom (D) is __....
VIII. (10 pts) Assign (R), (S) to the chirality centers of the following: Me НЕОН НО-НН Me
Determine the enantiomeric excess (1) and indicate which configuration (2), S or R, is in excess. If R-3-bromo-2- methylhexane is -80 degrees, would a polarimetry reading of the mixture in this problem rotate light (3) clockwise (CW) or counterclockwise (CC) (8) Br Br 15% 85% (this question is worth 9 points, not 8 as stated in the picture) 1. determine enantiomeric excess (your answer should be a number) 2. determine whether excess is S or R. 3. Does the mixture...
1.(a) (2pts.) Draw the structural formula for each amine. (b) provide the IUPAC name the structure below 4-aminobutanal (R)-2-butanamine 2. (6 pts.) Consider the Grignard reaction shown below which forms a C-C bond via an Aw step. In box A, draw the structure of the nucleophile involved in the A step and highlight the nucleophilic atom. In box B, draw the structure of the electrophile involved in the Aw" step and circle the electrophilic atom. In box C, draw the...
1. Assign R or S configuration to each indicated chirality center (carbon A and B) in the following molecule (vitamin C). Which of the following assignments is correct? но OH HO H. a. carbon A (R); carbon B (S) b. carbon A (R); carbon B (R) c. carbon A (S); carbon B (R) d. carbon A (S); carbon B (S) 2. Erythronolide B is the biological precursor of erythromycin, a broad-spectrum antibiotic. How many chirality centers does erythronolide B have?...
Thank you 4. (4 pts) Assign each chiral carbon as R or S in compound-A. Draw the mirror image of compound-A and assign configuration to each chiral carbon in the new molecule. (note: dotted line represents the mirror). Br Compound-A mirrorimage ofCompound-A mirror 5. (2 pts) Carbon-1 is R or S? Carbon-2 is R or S? H2N 2 CH3
2. (4 pts) Assign (R) or (S) configurations to each of the following compounds. b) Всш CI NC H нш Он CH3
Assign R, S configurations to each indicated che e se A. OH! HO TTCH NH, merupp hale HOC / OH H HO HC COZH acid tarber CH, 1. The configuration of this carbon atom (A) is 2. The configuration of this carbon atom (B) is 3. The configuration of this carbon atom (E) is Consider the structure of streptimidone to answer the following question(s). OH OH strep timidone H3C H 4. Assign R or S configuration to each chirality center...
5. Assign R or S configuration to each indicated chirality center (carbon A and B) in the following molecule (vitamin C). Which of the following assignments is correct B но но OH но H se A a. carbon A (S); carbon B (R) b. carbon A (R); carbon B (R) c. carbon A (R); carbon B (S) d. carbon A (S); carbon B (S) 6. Which of the following statement is NOT correct? a Constitutional isomers are compounds whose atoms...
9. Determine the R/S configuration for Structure A and B. What is the relationship between the structures? A: н =0 B: Н-с-он Он он Но 6 но-с-н Н-С-ОН ОН ОНн H-C-OH CH2OH Which of the following Lewis structures of protonated methanamide is incomplete? H .н H H C NH2 н NH2 H-C NH2 н н" NH2 Which of the following compounds has an ionic bond? a) H.O b) NH.C c) CH.CI d) CH.Li 2. Draw all resonance structures of each...