Multiple ChoiceWhich carbon in the following compound is most likely to react with an electrophile? 357views3rank2comments
Textbook QuestionThe benzene ring alters the reactivity of a neighboring group in the benzylic position much as a double bond alters the reactivity of groups in the allylic position. Benzylic cations, anions, and radicals are all more stable than simple alkyl intermediates. (iii) Use resonance forms to show the delocalization (over four carbon atoms) of the negative charge of the benzyl anion.474views
Textbook QuestionThe polarization of a carbonyl group can be represented bya pair of resonance structures:<IMAGE>Cyclopropenone and cycloheptatrienone are more stable than anticipated. Cyclopentadienone, however, is relatively unstableand rapidly undergoes a Diels–Alder dimerization.Explain.<IMAGE>203views
Textbook QuestionFour pairs of compounds are shown. In each pair, one ofthe compounds reacts more quickly, or with a more favorableequilibrium constant, than the less conjugated system.In each case, explain the enhanced reactivity.(a) <IMAGE>(b) <IMAGE>179views
Textbook QuestionThe following hydrocarbon has an unusually large dipole moment. Explain how a large dipole moment might arise.<IMAGE>215views
Textbook QuestionWhen 3-chlorocyclopropene is treated with AgBF4, AgCl precipitates. The organic product can be obtained as a crystalline material, soluble in polar solvents such as nitromethane but insoluble in hexane. When the crystalline material is dissolved in nitromethane containing KCl, the original 3-chlorocyclopropene is regenerated. Determine the structure of the crystalline material, and write equations for its formation and its reaction with chloride ion.181views
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