:Br: A) The cation rapidly switches between two positions of the electrophile. The bromine atom moves to whichever position currently has the positive charge. B) Attack of the bromide on the cation repels the positive charge, flipping it to the other end of the double bond. Attack at the other end flips the charge back again. C) The cation is found simultaneously in two positions of the electrophile. The electrons from the negatively charged bromide are attracted to either of these cationic positions, forming a bromine- carbon bond. D) The cation is in equilibrium between two positions of the electrophile. The bromine atom attacks whichever position currently has the positive charge.
:Br: A) The cation rapidly switches between two positions of the electrophile. The bromine atom moves to whichever position currently has the positive charge. B) Attack of the bromide on the cation repels the positive charge, flipping it to the other end of the double bond. Attack at the other end flips the charge back again. C) The cation is found simultaneously in two positions of the electrophile. The electrons from the negatively charged bromide are attracted to either of these cationic positions, forming a bromine- carbon bond. D) The cation is in equilibrium between two positions of the electrophile. The bromine atom attacks whichever position currently has the positive charge.
Organic Chemistry
8th Edition
ISBN:9781305580350
Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Chapter20: Dienes, Conjugated Systems, And Pericyclic Reactions
Section: Chapter Questions
Problem 20.24P: Pyridine exhibits a UV transition of the type n at 270 nm. In this transition, one of the unshared...
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