Explain how to count/identify the number if sterioisomers. How many total possible stereoisomers are there for...
please explain and show how to get all of the
sterioisomers
9. How many stereoisomers of 2,4-pentanediol, CHsCH OH)CH2CH OH)CHs, exist? a. C. d. 4
3. Consider the molecules A and B shown. (2 points) i. How many stereoisomers are possible? ii. Draw each of the possible stereoisomers. он CI Он iii. Identify pairs of enantiomers and pairs of diastereomers. A. В
A) how many stereoisomers are possible for this compound? Show
how this can be easily determined mathematically
B) draw all stereoisomers for this compound. Use dashes and
wedges appropriately at each stereo center. DO NOT SHOW HYDROGEN
ATOMS @ EACH STEREOCENTER
C) Identify and label each pair of stereoisomers drawn in part
B (above) as either enantiomers or diastereomers
D) identify and label each pair(s) of stereoisomers that would
be optically inactive as 50/50 mixture in a polarimeter and explain...
How many chiral carbon atoms does each molecule have and how
many total stereoisomers are possible?
a. CH3CHCHCHCH3 CH2CH3 number of chiral carbon atoms number of total possible stereoisomers OH b. CH3CHCH2CHCH; CH3 number of chiral carbon atoms 2 number of total possible stereoisomers 4 OH O c. HOCH CHCHÖCH,OH OH number of chiral carbon atoms number of total possible stereoisomers
How many products are formed when compound C is hydrogenated (i.e., count the number of stereoisomers you expect.) H2 Pd/C how many products? (A) one (B) two (C) three (D) four (6) - What reagent(s) will effect the conversion of 1-butanol to butanal? OH (A) K2Cr2O), H2SO4 (B) PCC... and not choice (C) (C) 1. DMSO, CO,Cl2; 2. NEt3... and not choice (B) (D) both (B) and (C) are satisfactory
5. How different stereoisomers (i.e. geometrical and optical isomers) of the complex are possible? many 3+ [Co(en)3] en = ethane-1,2-diamine ethylenediamine = NH2CH2CH2NH2 а) 1 b) 2 c) 3 d) 4 e) 5
Solve 12-14
12. Consider the molecule shown below. OH OH f. How many stereoisomers are possible? g. Draw each of these stereoisomers. h. Identify pairs of enantiomers and pairs of diastereomers. i. Build a model of the stereoisomer that has both OH groups pointing out. Also, build a model of the mirror image of this molecule. j. Do your two molecules represent enantiomers? Are they chiral? Fischer Projections 13. Build a model of 1-bromo-1-chloroethane. a. Draw a3D representation of this...
UUTISET Problem 5: Consider the following molecule and answer the questions below. ОНОН How many potential stereoisomers could this molecule have? Draw all possible stereoisomers. Is this molecule able to exist in four (4) distinct stereoisomers? Explain. Problem 6: How are the following pairs of molecules related. Choices are enantiomers, diastereomers, the same, completely different, meso forms, constitutional isomers or conformational isomers.
(3 points extra credit) Consider 1.2.3.4.5.6-hexamethylcyclohexane. How many stereoisomers does it have? How many pairs of enantiomers does it (total) have? How many meso compounds?
2) a) Consider 2-bromo-3-chlorobutane. How many stereoisomers are possible for this compound? Draw all stereoisomers, label each stereocenter with the appropriate R/S designation to show handedness, and indicate the relationship (enantiomers or diastereomers) between every possible pairing of compounds. Name each compound according to IUPAC nomenclature, using appropriate R/S designation to show handedness. b) Repeat this exercise for 2,3-Butanediol. What is different about this compound relative to the first example? What word describes the unique stereoisomer? c) Which of the...