Answer:
10) 3 chiral atoms
11) R/S
1. R
2. S
3. S
ow Cinele the chiral atomis. pes) du n for b 10) The structure for her ude...
Name: 10) The structure for benzyl penicillin is shown below. Circle the chiral atoms. (pts) HHH NSCH 0 . CH, H COH 11) Assign R or S configurations to the following structures. (3 pts) OH OH Br н C...NH H-CC СОН CO₂H 2.2015 punez Duan BE
2. For each of the molecules or ions below, draw its Lewis structure and show any resonance structures if they exist. Show the formula charges on each atom in the structure, if applicable ΝΗ, NO 'H:N:H 2 NOH, H.COCH, COM 3 Ö: HH e 00: H:0:0:0: H-NH # H Brfs NF a FIN -F: :: :F: Brz AIF Sila 1 14 SF 11 12 13 15 SF, co, PH 10 HNO, 16 17 18 19 20 CH₂ CH₂ H₂SO. CECI,...
are all of these identical?
4. Determine if each of the following structures i) contain chiral centers. Label Chical centers with an asterisk. ii) are enantiomers or not. Write "enantiomers" or "identical below each pair. (Hint: determine Ror S for each) a k al identical identical 3 CH | HỌC, OH HOA Hu H + C F ¢ identical ch; HH Br B HC CH, HẠC X 10 identical 3 4 O HC H4 4. 3 . 44 4n/ ТОН...
3. (4 pts) Complete the Fischer projection drawn below by adding the four substituents to the chiral carbon of (s)-2-methyl-3-bromo-hexane. 4. (4 pts) Draw a wedge and dash structure representing (1R 2R,3S)-1,2- dichloro3-ethylcyclohexane. 5. (4pts) 2-bromobutane is shown below. Is this (R)-2-bromobutane or (S)-2 bromobutane? 6. (6 pts) For each chiral carbon in ascorbic acid (vitamin C), shown below, assign Ror S to each stereocenter. How many stereoisomers of ascorbic acid are possible? OH HO ОН 7. (9 pts) (Are...
Identifying Stereochemical Relationships and Assigning Stereochemistry 1. Follow the instructions provided to indicate the relationship between the structure in the box and those shown underneath. HECH CHE CH,CH a) Write "a" in the blank below each molecule that represents the enantiomer of the one in the box. b) Write "b" in the blank below each molecule that represents a diastereomer of the one in the box. c) Write "e" in the blank below each molecule that is the same as...
* Question Completion Status: QUESTION 4 Is the following structure chiral? Ph. ČOOH Yes No QUESTION 5 1p Assign the correct stereochemical descriptor R or S according to the Cahn-Ingold-Prelog (CIP) nomenclature system to the following compound. Hint: The only possible answers are either the letters R or S- make sure to use CAPITAL letters, and only provide a single character. COOH NH2 н Me QUESTION z Is the following structure chiral? ОН НООС HO, O Yes O No QUESTION...
Question 6: 10 pts 5 pts (A) Draw the structure of: 1. Deoxyadenylic acid 2. Uridine (B) Draw the two different dipeptides from L-tyrosine and L-alanine, showing the following in each structure. 1. the stereochemistry of the chiral centers 2. the N terminal 3. the C terminal 4, the peptide bond H3C OH OH NH2 NH2 HO L-alanine L-tyrosine ΝΗ, N pyrimidine purine NH O NH H,C, NH "NH NH NH H H H cytosine ( uracil (U; occurs in...
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 atom 3) он NH2 Br Br F H (10 pts each) Show detailed méchanism for the following conversions. 4) -2 Br2 Brn H, o
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...
1. What amino acids do the following abbreviations stand for? Draw the structure of each. a) lle b) Thr c) Gin 2. Name and draw the structures of the amino acids that fit these descriptions: a) Contains an isopropyl group b) Contains a secondary alcohol group 3. Which of the following objects is chiral? a) A pair of scissors b) A comb c) A drinking glass 4. What does the term achiral mean? Give two examples involving organic structures.. 5....
4. Write out the 10 structure for the following polypeptide: он он HyN-CH-C-N-CH-C-N-CH-COO CH2 CH-OH CH C-NH2 CH3 COO 5. Illustrate the possible 2° structure interactions in the following polypeptide: R. 6. Identify the type of 3° structure interaction that will occur between the following pairs of amino acids: a) Aspartic acid and lysine b) Serine and tyrosine c) Leucine and valine d) Cysteine and cysteine 7. Draw out the products of the hydrolysis of the following polypeptide: HsN CH-C-N-C-C-N-C-C-N-CH-C-N-CH-COo...