Transcription of ELECTROPHILIC AROMATIC SUBSTITUTION REACTIONS OF …
{{id}} {{{paragraph}}}
Example: dental hygienist
ELECTROPHILIC AROMATIC SUBSTITUTION REACTIONS OF …
750 CHAPTER 16 THE CHEMISTRY OF benzene AND ITS DERIVATIVESThis hybridization allows one of its electron pairs to occupy a 2porbital, which has the samesize, shape, and orientation as the carbon 2porbitals of the ring. In other words, an oxygen 2porbital overlaps more effectively with the carbon 2porbitals of the ring than an oxygen sp3or-bital would. (We learned about the same effect in resonance-stabilized allylic systems; p. 713).The UV spectrum of anisole is a direct consequence of this (a) Explain why compound Ahas a UV spectrum with considerably greater lmaxvalues andintensities than are observed for ethylbenzene.(b) In view of your answer to part (a), explain why the UV spectra of compounds Band Carevirtually How could you distinguish styrene (PhLCHACH2) from ethylbenzene by UV spec-troscopy?
Halogenation of benzene, however, is a substitution reaction; a ring hydrogen is replaced by a halogen. Second, the reaction conditions for benzene halogenation are much more severe than the conditions for addition of halogens to an alkene. The first step in the mechanism of benzene bromination is the formation of a complex between Br
Tags:
Information
Domain:
Source:
Link to this page:
Please notify us if you found a problem with this document: