Concept explainers
(a)
Interpretation:
The percent of each enantiomer present for the given value needs to be calculated:
90% ee
Concept Introduction :
If one enantiomer dominates the other in a mixture of two, the excess of that enantiomer is then stated as a percentage of the total amount of that enantiomer. It also gives some information about the mixture's overall optical rotation.
(b)
Interpretation:
The percent of each enantiomer present for the given value needs to be calculated:
99%ee
Concept Introduction :
If one enantiomer dominates the other in a mixture of two, the excess of that enantiomer is then stated as a percentage of the total amount of that enantiomer. It also gives some information about the mixture's overall optical rotation.
(c)
Interpretation:
The percent of each enantiomer present for the given value needs to be calculated:
60%ee
Concept Introduction :
If one enantiomer dominates the other in a mixture of two, the excess of that enantiomer is then stated as a percentage of the total amount of that enantiomer. It also gives some information about the mixture's overall optical rotation.
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Chapter 5 Solutions
ORGANIC CHEMISTRY - LOOSELEAF W/CONNECT
- Each H↔H eclipsing interaction in ethane costs about 4.0 kJ/mol. How many such interactions are percent in cyclopropane? What fraction of the overall 115 kJ/mol (27.5 kcal/mol) strain energy of cyclopropane is due to torsional strain.arrow_forwardLocate the stereogenic center in each compound and draw both enantiomers. b. HO, OH С. HO. NH2 a.arrow_forwardHow are the compounds in each pair related to each other? Are they identical, enantiomers, diastereomers, constitutional isomers, or not isomers of each other? CH3 a. b. C. d. e. f. CH3 HC. HO I CI CH3 CH3 Br H C and and CHO H OH and and and and H CI OHC HC HO CI CBr CH3 OH g. h. j. Br I. HO • k. H and •pt-pt. OH BrCH₂ H H CH3 H HỌ CH3 "Br H and CCH₂OH CH3 and and CH₂Br and CH3 H Br HC Br H. and HO CH3- CH3 CH3 H HOCH₂ H BrCH₂ Br H CH3 CH3 _CH_OH H OH Harrow_forward
- 68. A reaction mixture is three parts of one enantiomer and one part of the other. What is the percent ee of this mixture? A) 75 B) 40 C) 65 D) 50arrow_forwardWhat is the ee for each of the following mixtures of enantiomers A and B?a. 95% A and 5% Bb. 85% A and 15% Barrow_forwardExplain each statement by referring to compounds A-E. он он HO .OH CI OH A в E a. A has a mirror image but no enantiomer. b. B has an enantiomer and no diastereomer. c. C has both an enantiomer and a diastereomer. d. D has a diastereomer but no enatiomer. e. E has a diastereomer but no enantiomer. E..arrow_forward
- What is the significance of a reaction that occurs in 94% enantiomeric excess? A. The product contains 94% of one enantiomer and 6% of other products B. The product contains 94% of one enantiomer and 6% of another enantiomer C. The product contains an enantiomer that is 94% pure. D. Product contains 97% of one enantiomer and 3% of another enantiomerarrow_forwardWhich 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 Harrow_forwardIf a mixture has an ee of 90%, what is the percentage of each enantiomer? Multiple Choice 80% : 20% 55% : 45% 95% : 5% 65% : 35%arrow_forward
- Match the pairs of compounds with the type of isomerism a. functional isomer b. skeletal isomer c. positional isomer d. cis, trans configuration e. diastereomer f. e,z, configuration g. enantiomerarrow_forwardWhich of the following pairs of structures represent a pair of enantiomers? a. b. d. H₂C H NC H₂CH₂C Br HC. H₂N H.... CN COOH Br CH3 CH3 OH COOH H... Br H... HOOC H₂C CN OH HC₂ H₂C H₂N Br CH3 CN CH₂CH3 COOH CHarrow_forwardSaquinavir (trade name Invirase) belongs to a class of drugs called protease inhibitors, which are used to treat HIV (human immunodeficiency virus). OH CONH2 O saquinavir Trade name: Invirase NH a. Locate all stereogenic centers in saquinavir, and label each stereogenic center as R or S. b. Draw the enantiomer of saquinavir. c. Draw a diastereomer of saquinavir. d. Draw a constitutional isomer that contains at least one different functional group.arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning
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