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ochem > Alcènes > Flashcards

Alcènes Flashcards

1
Q

addition H2

A

/Pt ou Pd
syn
perd alcène

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2
Q

addition HX

A

dans du CCl4
additioner sur la liaison double
markovnikov
possibilité avant et arrière

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3
Q

addition d’eau en milieu acide

A

HCl 10%/H2O
ajoute un OH
markovnikov

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4
Q

addition de X2

A

dans du CCl4
faces opposés (anti)

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5
Q

addition de HBr en présence de peroxydes

A

HBr/peroxyde
hv
anti markovnikov
ajoute Br

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6
Q

hydroboration et oxydation

A
  1. BH3
  2. H2O2, OH-
    anti markovnikov
    syn
    ajoute OH
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7
Q

oxydation douce

A

KMnO4 dilué à froid
OH sur C voisins
syn

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8
Q

oxydation forte

A

KMnO4 concentré
coupe alcène et laisse =o
remplace C-H avec C-OH

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9
Q

oxydation modérée (ozonolyse)

A
  1. O3
  2. H2O/Zn
    coupe alcène et laisse =o
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ochem (6 decks)

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