Alcynes Flashcards

1
Q

Comment obtenir une dicétone ?

A

✔️Ozonolyse

✔️oxydation par MnO4 dilué,froid

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2
Q

Reaction avec alcynure ?

A

✔️Alkylation (SN)
✔️Epoxy addition
✔️Ester (A/E)
✔️ acide carboxylique

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3
Q

Alcyne + per acide donne ?

A

Oxirane

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4
Q

Comment créer cétone ?

A

✔️Hydroboration alcyne non vrai
✔️ROH,Hg2+
✔️Hg2+, H2O (hydratation)
✔️XOH (tautomérie)

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5
Q

Alcyne ➡️ alcane ?

A

Hydrogénation catalytique H2, Ni

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6
Q

Alcène ➡️ alcène

A
  • H2 + Pd des
  • 2 Na + 2NH3
  • LiAlH4, H+, H2O
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7
Q

Alcyne ➡️ alcène (E)

A
  • 2Na, NH3

- LiAlH4, CH2O, H+

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8
Q

Alcyne ➡️ alcène (Z)

A

H2 + Pd des

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9
Q

Dimerisation on d’un alcyne vrai ?

A

CuCl2, O2

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10
Q

Alcyne + KMnO4 à chaud ?

A

Donne 2 acides R1-COOH + R2-COOH

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11
Q

Passer du propane à l’acide but-ynoïque ?

A
  1. NH2

2. CO2

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