Interpretation:
The reason for a deuterium-labelled compound to produce only
Concept Introduction:
Electrophiles are electron deficient species which has positive or partially positive charge. Lewis acids are electrophiles which accept electron pair.
Nucleophiles are electron rich species which has negative or partially negative charge. Lewis bases are nucleophiles which donate electron pair.
Free radical is an atom, molecule or ion that has unpaired electrons which makes it highly chemically reactive.
Substitution reaction: A reaction in which one of the hydrogen atoms of a hydrocarbon or a
Elimination reaction: A reaction in which two substituent groups are detached and a double bond is formed is called elimination reaction.
Addition reaction: It is the reaction in which unsaturated bonds are converted to saturated molecules by the addition of molecules.
Elimination bimolecular mechanism
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Organic Chemistry
- Identify two alkenes that react with HBr to form 1-bromo-1-methylcyclohexane without undergoing a carbocation rearrangement.arrow_forwardWhich alkene reacts with a red-brown solution of bromine to form 1,2-dibromo-1-ethylcyclohexane.arrow_forward3. A primary alkyl bromide of molecular formula C6H13Br was found to be optically active. Treatment of this alkyl bromide with potassium tert-butoxide in tert-butyl alcohol gave an elimination product of molecular formula C6H12 that was optically inactive. Draw structures for an alkyl bromide and the elimination product derived from it that are consistent with these dataarrow_forward
- Which of these alkyl chlorides undergoes dehydrohalogenation in the presence of a strong base to give pent-2-ene (shown below) as the only alkene product? O l-chloro-2-methylbutane O 2-chloropentane O 3-chloropentane O 1-chloropentane O l-chloro-3-methylbutanearrow_forwardSelect the correct isomer of 2-bromo-4-isopropyl-1-methylcyclohexane that, when subjected to ethoxide followed by hydrogenation, would yield a single isomer of 4-isopropyl-1- methylcyclohexane.arrow_forwardAccount for the fact that the bicyclic ether (3) is formed from the trans isomer but not from the cis isomer.arrow_forward
- Draw an approximate reaction-energy diagram showing the curves for the two possible pathways for ionic addition of HBr to 1-methylcyclohexene. (a) Formation of the major product, 1-bromo-1-methylcyclohexane, and (b) formation of the minor product, 1-bromo-2-methylcyclohexane. Point out how these curves show that 1-bromo-1-methylcyclohexane should be formed fasterarrow_forwardThe reaction of 3,4-dimethyl-3-hexanol (3,4-dimethylhexan-3-ol) with HBr generates compound A as the major product. Treatment of compound A with a strong base gives two isomers of compound B as the major product, along with one isomer of compound C and one isomer of compound D as minor products, all of which have one double-bond equivalent. Identify compounds A, B, C, and D and give their names. By what mechanism does the reaction of 3,4-dimethyl-3-hexanol with HBr occur? By what mechanism does the reaction of A with strong base to form B occur? Propose reaction conditions for an alternative, one-step method for converting 3,4-dimethyl-3-hexanol directly to compound B.arrow_forwardReaction of HBr with 3-methylcyclohexene yields a mixture of four products: cis-and trans-1-bromo-3-methylcyclohexane and cis-and trans-1-bromo-2-methylcyclohexane. The analogous reaction of HBr with 3-bromocyclohexene yields trans-1, 2-dibromocyclohexane as the soleproduct. Draw structures of the possible intermediates, and then explain why only a single product is formed in this reaction.arrow_forward
- 3-chloro-1-butene reacts with sodium ethoxide in ethanol to produce 3-ethyoxy-1-butene. In the absence of sodium ethoxide, 3-chloro-1-butene reacts with ethanol to produce both 3-ethoxy-1-butene and 1-ethoxy-2-butene. Explain these results. Be sure to include mechanisms and structures in your explanation.arrow_forwardPara-substituted product was produced when phenol reacts with cyclohexanecarbonyl bromide in the presence of AIB13. -Br Cyclohexanecarbonyl bromide (i) Outline the mechanism for this reaction. (ii) Draw the alternative substituted product formed.arrow_forwardOne compound that contributes to the “seashore smell” at beaches in Hawai‘i is dictyopterene D', a component of a brown edible seaweed called limu lipoa. Hydrogenation of dictyopterene D' with excess H2 in the presence of a Pd catalyst forms butylcycloheptane. Ozonolysis with O3 followed by (CH3)2S forms CH2(CHO)2, HCOCH2CH(CHO)2, and CH3CH2CHO. What are possible structures of dictyopterene D'?arrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning