Methyl Chloride → 1,2,3,4-Tetramethylcyclopentadiene

HRID 265833

Reaktionsgleichung

Reaktionsgleichung von HRID 265833
[OH-].[Na+].[CH3:3][C:4]1[C:5]([CH3:10])=[C:6]([CH3:9])[CH2:7][CH:8]=1.[CH3:11]Cl>[Cl-].C([N+](CCCC)(CCCC)C)CCC>[CH3:3][C:4]1[CH2:8][C:7]([CH3:11])=[C:6]([CH3:9])[C:5]=1[CH3:10]

Komponenten

5

Edukt 3

HCID 6327Methyl ChlorideHCID 14798Sodium HydroxideHCID 1380631,2,3-Trimethylcyclopentadiene

Produkt 1

HCID 1381631,2,3,4-Tetramethylcyclopentadiene

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 91822Tributylmethylammonium chlorideKatalysator

Versuchsvorschrift

A stainless steel autoclave is charged with 50% sodium hydroxide (57 g, 0.7 mole), 80 percent tri-n-butylmethylammonium chloride (1 g, 0.0034 mole), and trimethylcyclopentadiene (mixed isomers, 32.4 g, 0.3 mole). Methyl chloride (15.7 g, 0.31 mole) is added at 60 psi and 25°-30° C. After reaction completion, the organic product phase is separated from the lower aqueous phase containing excess base and sodium chloride slurry. The mixture of crude tetramethylcyclopentadienes is subject to pyrolysis as described in Example 1C to obtain 1,2,3,4-tetramethylcyclopentadiene.

Aufarbeitung

  1. customAfter reaction completion
  2. customthe organic product phase is separated from the lower aqueous phase
  3. additioncontaining excess base and sodium chloride slurry
  4. additionThe mixture of crude tetramethylcyclopentadienes

Quellen und Nachweise

ORD-Eintrag
ord-277c4704117e46329f891fd119a363b2
Quelldatensatz
uspto-grants-1997_07
Patentnummer
US05648578

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