Synthesize the (R) enantiomer of each of the following compounds from the appropriate enantiomer of 2-bromobutane. Show three-dimensions at the chiral centers. a. b. C. SH d. S.
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![Synthesize the (R) enantiomer of each of the following compounds from the
appropriate enantiomer of 2-bromobutane. Show three-dimensions at the
chiral centers.
a.
b.
C.
SH
d.
S.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F23862da6-8735-4cbc-b2d1-d0ea7a7a0adc%2F8059899d-5c66-4594-8475-e2496168a8f1%2F3x8t1hp_processed.jpeg&w=3840&q=75)
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- 3), compounds, enantiomers, diastereomers, or constitutional isomers). The same answer can be used more than once. For the following pairs of compounds, indicate the relationship (identical (a) (b) H H H HO CO,Me MeO,COH NH2 NH2 H. HN -NH2 MeO,cT'OH H. HOTCOME H (c) H CHCH3 (d) CH3 Br. H H он Br- -CH,CH, Br H +H H- Br -H H H HO- -H CH3 H3C- Br -Br ČH3 ČH3 3Which compounds contain stereocentres? I. III. Select one: II, IV a. O b. I, II О с. I, III O d. III, IV ОН II. IV. ОН CI ОН1. Which of the following molecules are chiral? Identify the chirality center(s) in each. (a) -CH3 (b) -CH2CH2CH3 (c) CH3CH2 Toluene Coniine (from poison hemlock) H. Phenobarbital (tranquilizer) 2. A 1.50 g sample of coniine, the toxic extract of poison hemlock, was dissolved in 10.0 mL of ethanol and placed in a sample cell with a 5.00 cm pathlength. The observed rotation at the sodium D line was +1.21°. Calculate [a]p for coniine. 3. Rank the substituents in each of the following sets: (а) -Н, -ОН, -CH-CH3, -СH>СH,ОН (b) -СО-Н, -СО,CH3, -СH2ОH, -он (c) -CN, -CH2NH2, -CH2NHCH3, –NH2 (d) –SH, –CH2SCH3, –CH3, –SSCH3 4. Assign R,S configurations to the following molecules: (a) Br (b) H (c) NH2 H3C-CO2H HOC-CO2H CH3 NCC-CH3 H H 5. Assign R or S configuration to each chirality center in the following molecules: (a) Br (b) CH3 CH3 HaBr (c) HaCH3 BraH H3C" OH H CH3 OH CH3 OH Which of these compounds are enantiomers, and which are diastereomers? 6. Which of the following substances have meso…
- Identify the statements about meso compounds that are true I. II. III. IV. a. b. c. d. Meso compounds contain an internal mirror plane Meso compounds must contain at minimum two chiral centers Meso compounds may or may not be chiral Meso compounds are not superimposable on each other IandII I and III I, II, and IV I, II, III, and IVIdentify if the following pairs of compounds are identical, enantiomers, diastereomers or constitutional isomers. * ОН CN and H;C uNCN INCN H3C H. C HO, (ii) and O (1) Identical; (ii) Enantiomers O (1) Enantiomers; (ii) Diastereomers O (1) Enantiomers; (ii) Enantiomers O (1) Identical; (ii) Identical3) After a chiral resolution of (S)-naproxen (the active ingredient in Aleve), an enantiomeric excess of the S-enantiomer is determined to be 95% ee. What is the ratio of S:R enantiomers in this resolved sample?
- Assign configuration to all the chirality centres in compound A. H A: R. H R. N S IZ "I H S O N O a. 2 (R), 5 (R), 6 (S), 7 (S) O b. 2 (S), 5 (R), 6 (R) O c. 2 (R), 5 (R), 6 (S) O d. 2 (S), 5 (R), 6 (S), 8 (S) O e. 2 (R), 5 (R), 6 (S), 7 (S), 8 (S) OH IZ CO 6 7 Z""I H 5 S4 N_2 **** OHDraw all the stereoisomers for structures A and B, label each structure as chiral and achiral and give the type of isometric relationship to the original compound be as specific as possible.Which of the following pairs of structures represent a pair of enantiomers? a. b. C. d. O a O b Oc C Od H3C... H Br C HC NC H3CH₂C COOH H... C CN CH3 Br HC H₂N CH3 OH COOH CN HC-CH3 Br Br H.C. HOOC OH H... C H₂C CN H3C C H₂N CH₂CH3 COOH H
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