Alkane reaction

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Author:
omi14
ID:
123564
Filename:
Alkane reaction
Updated:
2011-12-13 23:24:43
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CHM 325 organic chemistry alkane reaction
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CHM 325 Organic Chemistry
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  1. What is free radical halogenation?
    • Initiation:
    • Propagaation:
    • Termination: combination of any two radicals
  2. How do you calculate enthalpy?
    ΔHº = (bonds broken) - (bonds formed)
  3. What is the relative selectivity of hydrogen in chlorination for 1º, 2º and 3º?
    1:4.5:5.5
  4. What is the relative selectivity of hydrogen in bromination for 1º, 2º and 3º?
    1:86:1700
  5. What is DMF?
    • dimethylformamide
  6. What is DMSO?
    • dimethyl sulfoxide
  7. What is an SN2 reaction?
    • R-Nuc
    • Backside attack
    • inversion of configuration
    • methyl>1º>2º
    • good nucleophile/weak base
    • good leaving group
    • polar aprotic solvent
    • second order reaction
  8. What is an SN1 reaction?
    • R-Nuc
    • carbocation intermediate
    • inversion/retention of configuration
    • 3º>2º
    • weak nucleophile/weak base
    • good leaving group
    • polar protic solvent
    • first order reaction
  9. What is an E1 reaction?
    • Alkene is formed
    • carbocation intermediate
    • 3º>2º
    • weak base/weak nuc
    • good leaving group
    • polar protic solvent
    • first order reaction
  10. What is an E2 reaction?
    • Alkene is formed
    • H and leaving group must be anti and coplanar
    • Zaitsev and Hofmann products form
    • 3º>2º>1º
    • strong base/good nuc
    • good leaving group
    • polar solvent
    • second order reaction
  11. What is a Zaitsev product?
    • Product with most substituted alkene
    • More stable
  12. What is a Hofmann product?
    • Product with the least substituted alkene
    • Less steric hinderance in removal of H

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