Concept explainers
(a)
Interpretation: The number of stereochemically distinct salts formed needs to be determined.
Concept Introduction: The carbon atoms containing 4 different groups attached to it are chiral carbon. Depending on the configuration they can be classified as ( R ) and ( S ). In the R configuration, the arrangement of the priority group is in clockwise direction on the other hand, in the S configuration the arrangement of the priority group is in the anticlockwise direction.
(b)
Interpretation: The stereochemical relationship between the products formed in the reaction needs to be determined.
Concept Introduction:
The type isomers which are non-superimposable non-mirror image of each other are known as diastereomers. On the other hand, the isomers which are non-superimposable mirror image of each other are known as enantiomers.
(c)
Interpretation: The pair of salts that can be separated by crystallization needs to be determined. Also, the pairs that are inseparable need to be determined.
Concept Introduction:
The type isomers which are non-superimposable non-mirror image of each other are known as diastereomers. On the other hand, the isomers which are non-superimposable mirror image of each other are known as enantiomers.
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EBK EXPERIMENTAL ORGANIC CHEMISTRY: A M
- You begin with pure (S)-4-methoxybutan-2-ol and want to prepare (R)-1-methoxy-3- cholorobutane in high yield. a. Show the reaction that would take place if you ran the reaction under the same conditions you used in this experiment. Please clearly indicate the stereochemistry. b. Would it be a good idea to use this procedure to make (R)-1-methoxy-3-cholorobutane in high yield? Explain your reasoningarrow_forward1. which of the following is true regarding an sn1 reaction? a. it would be faster at 25 ̊ than 50 ̊ b. it would be faster in ethanol than in pentane c. keeping the moles of reactants constant but doubling the quantity of solvent would decrease the rate by a factor of 4. d. stereochemical inversion occurs exclusively.arrow_forward(a)Which compound/s will produce an orange precipitate upon reaction with 2,4-DNPH? (b)Which compound/s will test positive towards Baeyer’s test? (c)Which compound/s will produce a brick-red precipitate upon reaction with Fehling’s reagent (CuSO4, tartrate, NaOH)? (d)Which compound/s will test positive towards the Iodoform test?arrow_forward
- What limitations of Friedel-Crafts alkylation reactions are avoided by using Friedel-Kraftsacylation reaction?What Peaks in the IR spectrum would indicate the los of 1-hexene and the formation of 2-hexanol?arrow_forwardBenzene is one of the compounds used as octane enhancers in unleaded gasoline. It is manufactured by thecatalytic conversion of acetylene to benzene: 3C2 H2(g) ⇌ C6 H6(g). Which value of Kc would make this reactionmost useful commercially? Kc ≈ 0.01, Kc ≈ 1, or Kc ≈ 10. Explain your answerarrow_forward1. how many stereoisomers are possible for 9,10- dibromo hexadecanoic acid? 2. Addition of bromine to palmitoleic acid primarily yields a set of enantiomers, (±) -three-9,10-dibromo hexadecanoic acid. The addition of bromine is an anti-addition to the double bond (ie, it appears to occur through the intermediary of the bromonium ion). Taking into account the stereochemistry of the cis double bond of palmitoleic acid and the stereochemistry of adding bromine, Write a three-dimensional structure for (±) -three-9,10-dibromo hexadecanoic acid!arrow_forward
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- A student wanted to use the Williamson ether synthesis to make (R)-2-ethoxybutane. He remembered that the Williamson synthesis involves an SN2 displacement, which takes place with inversion of configuration. He ordered a bottle of (S)-butan-2-ol for his chiral starting material. He also remembered that the SN2 goes best on primary halides and tosylates, so he made ethyl tosylate and sodium (S)-but-2-oxide. After warming these reagents together, he obtained an excellent yield of 2-ethoxybutane. What would have been the best synthesis of (R)-2-ethoxybutane?arrow_forwardWill the bonding of the Zn2+ ion to the ketone oxygen lone pair make theketone C=O easier or more difficult to reduce? Why?arrow_forwardA)Circle all of the stereo centers in MDMA. B) assign the absolute stereochemistry (R or S) for each stereo centerarrow_forward
- Macroscale and Microscale Organic ExperimentsChemistryISBN:9781305577190Author:Kenneth L. Williamson, Katherine M. MastersPublisher:Brooks ColeEBK A SMALL SCALE APPROACH TO ORGANIC LChemistryISBN:9781305446021Author:LampmanPublisher:CENGAGE LEARNING - CONSIGNMENT