Chapter 10 summary

Chapter 10 summary - Chapter 10 Conjuga0on in...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Chapter 10 Conjuga0on in Alkadienes and Allylic Systems Allyl species Allyl species •  The electrons in the π ­system are spread out over all 3 C ­atoms –  Allyl ca0on: 2 electrons –  Allyl radical: 3 electrons –  Allyl anion: 4 electrons •  No localized double and single bonds. Both C ­C bonds are in between a double and single bond •  Both end C ­atoms are equivalent •  AJack on/from both end C ­atoms Basic Concepts •  allyls (allyl ca0ons, allyl anions, allyl radicals) –  nomenclature –  genera0on of allylic species –  π ­system –  resonance stabiliza0on –  reac0vity –  pKa Basic Concepts •  dienes –  nomenclature –  conjugated dienes: conforma0ons (s ­trans, s ­cis) –  allenes –  π ­system –  kine0c/thermodynamic control •  conjuga0on –  defini0on –  effects on stability and structure Reac0ons •  Nucleophilic subs0tu0on of allyl halides –  SN1 (solvolysis) –  SN2 •  Allylic halogena0on –  radical mechanism •  Forma0on of dienes •  Electrophilic addi0on to dienes –  HBr, HCl, Br2, Cl2 •  regioselec0vity (1,2 ­addi0on vs. 1,4 ­addi0on) •  kine0cs/thermodynamics •  Diels ­Alder •  Be able to write product if reactants are given •  Be able to derive reactants if product structure is known ...
View Full Document

Ask a homework question - tutors are online