(a)
Interpretation:
The product formed by the hydroboration-oxidation of cyclohexene is to be stated.
Concept introduction:
Hydroboration reaction is a two-step reaction, which involves conversion of
(b)
Interpretation:
The product formed by the hydroboration-oxidation of
Concept introduction:
Hydroboration reaction is a two-step reaction, which involves conversion of alkene into alcohol. This type of reaction follows anti-Markovnikov’s rule.
(c)
Interpretation:
The product formed by the hydroboration-oxidation of
Concept introduction:
Hydroboration reaction is a two-step reaction, which involves conversion of alkene into alcohol. This type of reaction follows anti-Markovnikov’s rule.
(d)
Interpretation:
The product formed by the hydroboration-oxidation of
Concept introduction:
Hydroboration reaction is a two-step reaction, which involves conversion of alkene into alcohol. This type of reaction follows anti-Markovnikov’s rule.
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Organic Chemistry
- Which of the following statements about 3-iodo-2-methylprop-1-ene is/are true? (i) It has an E isomer and a Z isomer. (ii) It can be converted to an alkyl lithium compound in one step by reacting with lithium metal. (iii) It would react with the following reagent to give 2-methylhept-1-ene as the product: CuLiarrow_forwardThe reaction of 1-bromopropane and sodium hydroxide in ethanol occurs by an SN2mechanism. What happens to the rate of this reaction under the following conditions?(a) The concentration of NaOH is doubled.(b) The concentrations of both NaOH and 1-bromopropane are doubled.(c) The volume of the solution in which the reaction is carried out is doubled.arrow_forward(a) Account for the following :(i) Electrophilic substitution reactions in haloarenes occur slowly.(ii) Haloalkanes, though polar, are insoluble in water.(b) Arrange the following compounds in increasing order of reactivity towards SN2 displacement:2-Bromo-2-Methylbutane, 1-Bromopentane, 2-Bromopentanearrow_forward
- Show how you would synthesize the following compounds from alkyl halides, vinylhalides, and aryl halides containing no more than six carbon atoms.(a) octane (b) vinylcyclohexane(c) trans-oct-3-ene (d) cyclopentyl propyl ketonearrow_forward(c) Alkenes can be transformed into epoxides by an epoxidation reaction. If the following hexenes are all subjected to an epoxidation reaction, which one would give an achiral epoxide? Explain your answer. 1-hexene cis-2-hexene trans-2-hexene cis-3-hexene trans-3-hexenearrow_forwardGive the product(s) formed when 1-butene reacts with the following: (a) HBr (b) dilute H2SO4 (c) Br2 in CCl4arrow_forward
- What is the alkyne product from the reactions of the following with NaNH2: (a) 2,2-dibromopropane (b) 1,1-dibromooctane (c) 1,2-dibromohexane (d) 2,3-dibromohexanearrow_forwardGive reasons: (i) C—Cl bond length in chlorobenzene is shorter than C—Cl bond length in CH3—Cl.(ii) The dipole moment of chlorobenzene is lower than that of cyclohexyl chloride.(iii) SN1 reactions are accompanied by racemization in optically active alkyl halidesarrow_forwardDeduce the structure of each compound from the information given. All unknowns in this problem have molecularformula C8H12.(a) Upon catalytic hydrogenation, unknown W gives cyclooctane. Ozonolysis of W, followed by reduction with dimethylsulfide, gives octanedioic acid, HOOC¬(CH2)6¬COOH. Draw the structure of W.(b) Upon catalytic hydrogenation, unknown X gives cyclooctane. Ozonolysis of X, followed by reduction with dimethylsulfide, gives two equivalents of butanedial, O“CH¬CH2CH2¬CH“O. Draw the structure of X.(c) Upon catalytic hydrogenation, unknown Y gives cyclooctane. Ozonolysis of Y, followed by reduction with dimethylsulfide, gives a three-carbon dialdehyde and a five-carbon dialdehyde. Draw the structure of Y.*(d) Upon catalytic hydrogenation, unknown Z gives cis-bicyclo[4.2.0]octane. Ozonolysis of Z, followed by reductionwith dimethyl sulfide, gives a cyclobutane with a three-carbon aldehyde (¬CH2¬CH2¬CHO) group on C1 and aone-carbon aldehyde (¬CHO) group on C2. Draw the…arrow_forward
- Specify reagents suitable for converting 3-ethyl-2-pentene to each of the following: (a) 2,3-Dibromo-3-ethylpentane (b) 3-Chloro-3-ethylpentane (c) 3-Ethyl-3-pentanol (d) 3-Ethyl-2-pentanol (e) 2,3-Epoxy-3-ethylpentane (f) 3-Ethylpentanearrow_forwardPlease give the main substitution product for each of the following reactions, and indicate the dominant mechanism: (a) 1-bromopropane + NaOCH3 → (b) 3-bromo-3-methylpentane + NaOC2H5 →arrow_forwardPredict the major products of the following reactions, and propose mechanisms to support your predictions. (a) pent-1-ene + HCl(b) 2-methylpropene + HCl(c) 1-methylcyclohexene + HI(d) 4-methylcyclohexene + HBrarrow_forward
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