Concept explainers
(a)
Interpretation:
The curved arrows for each step of the mechanism must be drawn and the sequence of arrow pushing patterns must be identified.
Concept Introduction :
The curved arrow shows the electron flow; and thereby, it shows bond breaking and new bond formation. The alpha hydrogen of
(b)
Interpretation:
For the conversion of 4 to 5 the electrophilic and nucleophilic centers must be identified with the help of resonance.
Concept Introduction :
Electrophilic centers are those where there is low electron density. Nucleophilic centers are those where there is higher electron density.
(c)
Interpretation:
Configuration of the newly formed chiral center during conversion of 4 to 5 must be determined. Why the other possible configuration is not observed must be explained.
Concept Introduction :
The configuration of a chiral center depends on the three dimensional orientations and priorities of different groups. Priorities of those groups can be determined using CIP (Cahn-Ingold-Prelog) priority rules according to which higher is the
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ORGANIC CHEMISTRY LL PRINT UPGRADE
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- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning