Concept explainers
(a)
Interpretation:
All resonance structures for the carbocation of given compound formed by ortho attack of the electrophile
Concept introduction:
Resonance structure is a blend of two or more Lewis structures. Resonance structures are represented by a double headed arrow between the structures.
(b)
Interpretation:
All resonance structures for the carbocation of given compound formed by ortho attack of the electrophile
Concept introduction:
Resonance structure is a blend of two or more Lewis structures. Resonance structures are represented by a double headed arrow between the structures.
(c)
Interpretation:
All resonance structures for the carbocation of given compound formed by ortho attack of the electrophile
Concept introduction:
Most of the organic structures cannot be represented using single Lewis structure. Therefore, there exists more than one Lewis structure for representing a molecule or ion. These structures are known as resonance structures.
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Organic Chemistry - With Access (Custom)
- a.What carbon radical is formed by homolysis of the C–Ha bond in propylbenzene? Draw all reasonable resonance structures for this radical. b.What carbon radical is formed by homolysis of the C–Hb bond in propylbenzene? Draw all reasonable resonance structures for this radical. c. The bond dissociation energy of one of the C–H bonds is considerably less than the bond dissociation energy of the other. Which C–H bond is weaker? Offer an explanation.arrow_forwardRank the following carbocations from most stable to least stable:arrow_forwardDraw the four resonance structures formed during bromination of methoxybenzene, CH3OC6H5, with Br2/FeBr3 to give para-bromomethoxybenzene and then circle the most stable resonance form.arrow_forward
- Circle the electrophiles in the following reagents: AlCl3 NO3– NO2+ H3O+ OH-arrow_forwardFor each reaction below identify the electrophile and the nucleophile.arrow_forwardDraw the intermediate carbocation that is formed when each is protonated, say, with H+.These occur when adding HBr, HCl, HI, or H+/H2O to a double bond. The rich get richer. Will it rearrange?arrow_forward
- Choose the correct major product of the reactionarrow_forwardWhat alkene is the major product formed from each alkyl halide in an E1 reaction?arrow_forward10. Use Hammond's postulate to determine which alkene in each pair would be expected to form a carbocation faster in an electrophilic addition reaction. Choose which is the more reactive compound (in the box) for both pairs.arrow_forward
- Indicate which carbocation is the most stable carbocation and which carbocation is the least stable carbocation?arrow_forwardOnce treated with HBr, which alkene is the most likely to undergo a carbocation rearrangement after the electrophilic addition step?arrow_forwardIllustrate the Electrophilic Addition of HX to an Alkene ?arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning