Choose the correct absolute configuration(s) for each asymmetric center (i.e. stereocenter) in the molecule shown. LCH...
What is the correct R/S configuration for each of the three stereocenters in the molecule below Choose the best term that best describes the relationship between this pair of molecules 1) What is the correct R/S configuration for each of the three stereocenters in the molecule below (1 mark) CH3 -ОН Н- -ОН Н- -OH Н- CH2CH3 a) 2R, 3S, 4R b) 2R, 3R, 4S c) 2S, 3R, 4R d) 2S, 3S, 4R е) 28, 3R, 4S 2) Choose the...
Indicate the stereochemical configuration for the tetrahedral centers shown below. OR OS not a configuration center Br R OS not a configuration center ООО Select the proper IUPAC name for the following compound, including the (R) or (S) designation where appropriate. Н. - (2R,3S)-2-chloro-3-methylpentane (29,3R)-2-chloro-3-methylpentane (2R 3R)-2-chloro-3-methylpentane O (2S,3S)-2-chloro-3-methylpentane Classify the following pair of compounds as the same compound, enantiomers, diastereomers, constitutional isomers, or not isomeric. Also, select the correct IUPAC name, including the correct (R) or (S) designation, for...
a. Assign the correct stereochemical descriptors to every stereocenter in the molecule below SH HN b. A Fischer projection for a polyhydroxy diacid is shown below. 1. Draw a bond-line projection for this molecule. 2. Draw the mirror image of the projection you drew above, then convert your mirror- image drawing into a Fischer projection. c. Shown below are Newman projections for (2R,3R)-, (2R,3S), and (2S,3S)-2,3-dichlorobutane. 1. Which is which? 2. Which compound is a meso compound?
11. Determine the absolute configuration of each asymmetric center in the following molecule CH2CH2CH2CH3 12. What is the enantiomeric composition of a mixture that has a specific rotation of +88 degrees and has an enantiomeric excess of 40%. What are specific rotations of each enantiomer? 13. Determine if each of the following pairs of compounds represent enantiomers, diastereomers, constitutional isomers, or two molecules of the same compound CH H+CH н-н H -Br BH CHE
7) How many enantiomers are there of the molecule are there of the molecule shown bole CO2H 1 1 OH 1 CH2OH A) B)1 C)2 D) 3 E) 6 8) What term describes the structural relationship between (2R 3R.45)-2.3.4-trichloroheptane and (2S,3S,4R)-2,3,4-trichloroheptane? A) not isomers B) constitutional isomers C) enantiomers D) diastereomers E) conformers 9) Label cach asymmetric carbon in the molecule below as having the Ror S configuration. A) 1R, 2R B) IR, 2S C) IS, 2R D) IS, 2S...
Testbank, Question 114 Assign the following stereocenter as having the R or s absolute configuration. HO+H : O There are no stereocenter in this compound
18. Assign the absolute configuration of the two stereocenters in stereoisomer of 2-bromo-3-pentanol shown below. Br ОН a) 2R, 3R b) 2R, 3S c) 2S, 3R d) 2S, 3S 19. The following are 5 stereorepresentations of 1,5-dimercaptopentane-1,5-diol. Taking (1) as a reference structure. Determine if each of the other stereorepresentations are conformers to (1), enantiomers to (1) and diastereomers of (1). OH OH Enantiomer Diastereomer Conformer HS SH (2) он SH Enantiomer Diastereomer Conformer OH OH HS "ОН (3) ON...
Identify the absolute configuration of the chirality centers in each of the following compounds as R or S. Note: if multiple chirality centers are present, indicate the stereochemical designations as: RR, SS, RS, or SR. Identify the absolute configuration of the chirality centers in each of the following compounds as R or S. Note: if multiple chirality centers are present, indicate the stereochemical designations as: RR, SS, RS, or SR. (Other terms used for chirality center include chiral center, stereocenter, and stereogenic...
3. (4 points) Assign absolute configuration to each stereogenic center(s) in each molecule, draw an enantiomer of each molecule, and then indicate if each molecule optically active or optically inactive. (a) (b) Он но. но- Он CHS enantiomer enantiomer
Which is the correct name for the compound shown below? H. O (2R,35)-2-Bromo-3-chlorobutane (25,3R)-2-Bromo-3-chlorobutane (2R, 3R)-2-Bromo-3-chlorobutane (2S,3S)-2-Bromo-3-chlorobutane Which compound is achiral? O meso-2,5-Difluorohexane O trans-1,2-Dimethylcyclohexane O (S)-3-lodohexane (2R, 3R)-2,3-Dibromoheptane 1