2. (i) (6pts) Draw an arrow pointing to each carbon that is considered to be a...
2. (18pts) (i) Draw an arrow pointing to each carbon that is considered to be a stereocenter in the structures below. (ii) Label the absolute configuration at each carbon stereocenter as either (R) or (S). (iii) Show work that justifies each label. (1pt will be deducted for each carbon that is mislabeled as a stereocenter. All other parts must be correct to receive credit for each case.) (b) (c) (d) Но НО Он SH
2. (18pts) (i) Draw an arrow pointing to each carbon that is considered to be a stereocenter in the structures below. (ii) Label the absolute configuration at each carbon stereocenter as either (R) or (S). (iii) Show work that justifies each label. (1pt will be deducted for each carbon that is mislabeled as a stereocenter. All other parts must be correct to receive credit for each case.) (a) OH HO OH
2. (18pts) (i) Draw an arrow pointing to each carbon that is considered to be a stereocenter in the structures below. (ii) Label the absolute configuration at each carbon stereocenter as either (R) or (S). (iii) Show work that justifies each label. (1pt will be deducted for each carbon that is mislabeled as a stereocenter. All other parts must be correct to receive credit for each case.) a) (c) (d) OH HO. OH SH
1) Draw an arrow pointing to EACH carbon that isnconsidered to
be a “stereocenter” in thebstruxtures below.
2) Label the absolute configuration at each carbon
stereocentee as either (R) or (S).
3) show the work that justifies each label
2. (18pts) (i) Draw an arrow pointing to each carbon that is considered to be a stereocenter in the structures below. (ii) Label the absolute configuration at each carbon stereocenter as either (R) or (S). (iii) Show work that justifies each...
4. (6pts) Label each molecule as a nucleophile or electrophile AND draw an arrow pointing to the atom on the molecule that would be the nucleophile or electrophile CI CEN HTΉ I verbo on si smith H-C-OH I-O-I H₃C – NH₂ Hool H3CH
1. Chirality (6pts, 2EA) Arethe following carbons indicated by the arrow stereogenic-a chiral carbon center). Write yes or DATE: 1104.19 No and explain? Н Нс. Br H Hас" Et 2 CONFIGURATIONS (2PTS, IEA) Assign stereoisomer configuration using R or S nomenclature (NOTE: priorities have been preassigned using Cahn-Ingold-Prelog convention) 3. Multiple Choice-Definition (1pt): Define enantiomers: (Circle the correct choice) Molecules with same molecular formula, and connectivity, but differ in 3-dimenisonal space a. b. Molecules with same molecular formula, and connectivity,...
a. Braw an arrow pointing to the configurational carbon b. Put a box around the anomeric carbon. c. Put a triangle on any hemiacetal carbons. d. Circle any acetal carbons. но он Benzyl ß-D-arabinofuranoside 2. D-Galactose is the C(4) epimer of D-glucose a. Draw the Fischer projections of D-galactose and L-galactose. D-Galactose L-Galactose b. Draw a-D-galactofuranose. Be sure to clearly show the stereochemistry at each stereocenter. a-D-Galactofuranose c. Draw ß-D-galactopyranose in it's two possible chair conformations (draw one chair, then...
1. Draw the dash-wedge structure that corresponds to the following Newman proje OH Htci CH CH3 4 Label each stereocenter in the following molecule with an asterisk (*) and identity it as na configuration. molecule with an asterisk (*) and identify it as having an R or an S NH2 3. Draw the most stable chair conformation for the following molecule. 4. Draw 3-ethoxypentane. 5. Assign the priority of the substituents around the asymmetric carbon. Br H I BY BE
1. For each of the structure star asymmetric carbon atoms, Lab with R and Sand draw any internal mirror plane of symmetry and label chiral or achiral molecules and meso structures H3C CH2Br OH I Br H -ОН HOH CI Н. TH Br H Br H OH HH CH2Br CH2CH3 a b C Br Br CI CI d СН3 CH3 CH3 ...Н H ОН CHз CHз нас CH3 f е
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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