Concept explainers
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(a)
Interpretation:
The rate of hydration of given
Concept Introduction:
Stereoisomers: Two compounds with same molecular formula but different in their orientation are considered as isomers.
The presence of atom with non-super impossible mirror image is defined as enantiomers which are given
Erythro product: It is the representation of carbohydrates in Fischer projection when two same substituents are placed on the same side.
Threo product: It is the representation of carbohydrates in Fischer projection when two same substituents are placed on opposite side.
(b)
Interpretation:
The reason for the reactivity of
Concept Introduction:
Stereoisomers: Two compounds with same molecular formula but different in their orientation are considered as isomers.
The presence of atom with non-super impossible mirror image is defined as enantiomers which are given
Erythro product: It is the representation of carbohydrates in Fischer projection when two same substituents are placed on the same side.
Threo product: It is the representation of carbohydrates in Fischer projection when two same substituents are placed on opposite side.
(c)
Interpretation:
The reason for the reactivity of
Concept Introduction:
Stereoisomers: Two compounds with same molecular formula but different in their orientation are considered as isomers.
The presence of atom with non-super impossible mirror image is defined as enantiomers which are given
Erythro product: It is the representation of carbohydrates in Fischer projection when two same substituents are placed on the same side.
Threo product: It is the representation of carbohydrates in Fischer projection when two same substituents are placed on opposite side.
(d)
Interpretation:
The reason for the reactivity of
Concept Introduction:
Stereoisomers: Two compounds with same molecular formula but different in their orientation are considered as isomers.
The presence of atom with non-super impossible mirror image is defined as enantiomers which are given
Erythro product: It is the representation of carbohydrates in Fischer projection when two same substituents are placed on the same side.
Threo product: It is the representation of carbohydrates in Fischer projection when two same substituents are placed on opposite side.
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Chapter 6 Solutions
Essential Organic Chemistry, Global Edition
- Choose the two alkyl bromides and the hydrogenation method that must be used to synthesize these alkenes from acetylene. Enter your answer as two letters in alphabetical order, followed by a number; i.e. ac2, not ca2. Do not use punctuation. Alkyl Halides а. СHзCH2Br b. CH3(CH2)4Br c. CH3(CH2)5Br d. CH3(CH2)§Br e. CH3(CH2);Br f. CH3(CH2)¿Br g. CH3(CH2)12Br Hydrogenation Method 1. H2, Lindlar's catalyst 2. Na, NH3 (1) Alkene #1: CH3 H3C bb1 Alkene #2: H3C, CH3 df1arrow_forwardCyclohexene (an alkene) is mixed with potassium permanagnate solution (KMnO4). What do you expect to observe? A. The mixture will turn purple as the permanganate is reduced by the alkene. B. The purple colour will disappear as the permanganate is reduced by the alkene. C. Nothing. Permanganate does not react with alkenes. D. The purple colour will disappear as the permanganate is oxidised by the alkene.arrow_forwardElimination of HBr from 2-bromobutane affords a mixture of 1-butene and 2-butene. With sodium ethoxide as base, 2-butene constitutes 81% of the alkene products, but with potassium tert-butoxide, 2-butene constitutes only 67% of the alkene products. Offer an explanation for this difference.arrow_forward
- Alkyl halides undergo elimination reactions to produce alkenes by the reacting with strong bases as shown in the following reaction (see image). In general, compounds where the halogen is axial (axial position) are much more reactive than those in which they are in the equatorial position. Taking the above into account: a. Which of the following compounds would give a faster elimination reaction: cis-1-bromo-2-tert-butylcyclohexane or trans-1-bromo-2-tert-butylcyclohexane? Draw the corresponding structures and clearly explain the choice.arrow_forwardWhen 2-bromobutane is reacted with CH3O-, two alkene products, namely 2-butene and 1-butene are obtained. Explain why the E2 reaction produces 2-butene as the major product (80%) and 1-butene as the minor product (20%)arrow_forward2. What Alkene would be used to synthesize 3-bromohexane? + HBr CH;CH,CHCH,CH,CH3 br 3. Write down the mechanism for the following reaction and predict which of the two possible products will be formed in the greatest yield ( 2nd and 3d carbocation). Write down the structures of the two possible products and explain your answer. CH;CH = CHCH, CH, CH3 + HBrarrow_forward
- Ethers can be prepared by reaction of an alkoxide or phenoxide ion with a primary alkyl halide. Draw the structure of the expected organic product of the reaction of 1-iodo-2-methylpropane with the following alkoxide ic + O Na You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. • Do not include lone pairs in your answer. They will not be considered in the grading. • Do not include counter-ions, e.g., Na", I", in your answer. C opy astearrow_forwardDrawing on what you know about the stereochemistry of alkene addition reactions, a. write the mechanism for the reaction of 2-butyne with one equivalent of Br2. b. predict the configuration of the product of the reaction.arrow_forwardV. Draw the intermediates for the attack of the nitronium ion (NO2*) on chlorobenzene at the o-, m-, and p- positions. Show all of the important resonance structures. Label any resonance structures that are especially stabilizing or destabilizing. Which positions are favored? Why?arrow_forward
- Ethers can be prepared by reaction of an alkoxide or phenoxide ion with a primary alkyl halide. Draw the structure of the expected organic product of the reaction of iodoethane with the following alkoxide ion: H3C CH3 + Na You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. Do not include lone pairs in your answer. They will not be considered in the grading. • Do not include counter-ions, e.g., Na", I, in your answer. P opy aste [*arrow_forwardWhat would the major organic reaction product be from the reaction of 1-bromo-1-methylcyclopentane withsodium hydroxide? Would the elimination reaction outcome be affected if a student accidentally adds sodium tertbutoxide instead of sodium hydroxide?arrow_forwardChoose from the options A-E and explain briefly by illustrations the chemistry behind each answer. Preamble: A reaction flask contains a 2-bromopentane in an ethanolic solution of sodium ethoxide at room temperature and results in the formation of two olefinic 1.All the following parameters would affect the rate and kinetics of the reaction exceptA.Solvent mediumB.Reaction temperatureC.Reaction timeD.Geometry and structure of the alkyl halideE.pH 2.What would be the major product when 2-iodopentane is involved in a dehydrohalogenation reaction? A.2-iodo-1-penteneB.2-penteneC.(E)-2-penteneD.(Z)-2-penteneE.Cis-2-pentenearrow_forward
Macroscale and Microscale Organic ExperimentsChemistryISBN:9781305577190Author:Kenneth L. Williamson, Katherine M. MastersPublisher:Brooks Cole
Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning
