2) a) Consider 2-bromo-3-chlorobutane. How many stereoisomers are possible for this compound? Draw all stereoisomers, label...
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...
5) (8 pts) Arrange the following compounds from most acidic through neutral to most basic. Briefly explain your reasoning. 7) (15 pts) a) Write out the 3-step arrow pushing mechanism showing how 1-pentene is hydrated to make 2-pentanol. b) Draw the other 2 alkenes (don't forgel cis/trans isomers!) that could also be hydrated to make 2-pentanol. Briefly explain why 1-pentene is the best choice. II, II,O a) heat Acidic Neutral Basic 6) (18 pts) Consider the Fischer projections of the...
IX. (12 pts) Draw Fischer projections of all possible stereoisomers of 3-bromo-2-chlorobutanoic acid: CHaCH(Br)CH(CI)CO2H. Determine the R/S configuration of each stereocenter. Indicate the relationship between each pair of stereoisomers.
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
Draw all possible stereoisomers for each of the following.(a). 2- chloro-3-hexanol. (b). 2-bromo-4- chlorohexane . (c) 2,3,-diachloro pentane. (d). 1,3-diabromopentane.(2) .Draw the stereoisomers of 2-methylcyclohexane.
3. (4 pts) Complete the Fischer projection drawn below by adding the four substituents to the chiral carbon of (s)-2-methyl-3-bromo-hexane. 4. (4 pts) Draw a wedge and dash structure representing (1R 2R,3S)-1,2- dichloro3-ethylcyclohexane. 5. (4pts) 2-bromobutane is shown below. Is this (R)-2-bromobutane or (S)-2 bromobutane? 6. (6 pts) For each chiral carbon in ascorbic acid (vitamin C), shown below, assign Ror S to each stereocenter. How many stereoisomers of ascorbic acid are possible? OH HO ОН 7. (9 pts) (Are...
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...
3. Draw all possible stereoisomers of 2-bromo-3-methoxypentane. Use solid and dashed wedges, where appropriate. (2 pts) осна 2-bromo-3-methoxypentane 4. Provide (RS)-designations for the four starred (*) chiral (stereogenic) centers. (2 pts) H
Which of the following statements is true regarding 13C-NMR How many stereoisomers are possible for 1-bromo-6-methyl-4-heptene-2-ol? Which of the following statements is true regarding symmetrical compounds in NMR experiments? Which of the following statements is true regarding C-NMR a. Carbon-13 is more sensitive than hydrogen NMR b. Carbon-13 resonances appear over a broader range than H-NMR c. Carbon-13 does not couple do adjacent carbons d. Carbon-13 nuclei cannot couple with Hydrogen nuclei How many stereoisomers are possible for 1-bromo-6-methyl-4-heptene-2-ol? a....
How many stereoisomers are possible for 3-methyl-1,4-hexadiene? Draw them and name each by the R-S and E-Z conventions. Write the structural formulas for the following compounds. 1,3,5-tribromobenzene O-chlorotoulene P-diethylbenzene 2,4,6-trimethylaniline 2,3-diphenylbutane 1,4-dicyclohexylbeneze