2-(Hydroxymethyl)-4-methylpentanoic acid → 4-Methyl-2-methylene valeric acid

HRID 444190

Reaktionsgleichung

Reaktionsgleichung von HRID 444190
O[CH2:2][CH:3]([CH2:7][CH:8]([CH3:10])[CH3:9])[C:4]([OH:6])=[O:5]>P(=O)(O)O>[CH3:9][CH:8]([CH3:10])[CH2:7][C:3](=[CH2:2])[C:4]([OH:6])=[O:5]

Komponenten

3

Edukt 1

HCID 117893432-(Hydroxymethyl)-4-methylpentanoic acid

Produkt 1

HCID 1686594-Methyl-2-methylene valeric acid

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 407Phosphonic acidKatalysator

Reaktionsbedingungen

Temperatur
270 °C

Versuchsvorschrift

2-(Hydroxymethyl)-4-methylpentanoic acid (8.7 g) is heated with 10 drops of 85% phosphonic acid in a Wood's metal bath at 220° C. for 20 minutes. A distillation head is attached and the pressure is slowly decreased to 60 mm while the temperature is increased to 270° C. Product starts to distill and the pressure is further decreased to 10 mm. The vapor temperature varies between 180° and 190° C. The yield of the title compound as distillate is 7.0 g.

Aufarbeitung

  1. distillationto distill
  2. customThe vapor temperature varies between 180° and 190° C

Quellen und Nachweise

ORD-Eintrag
ord-67861715bdd9470dbd50946847871706
Quelldatensatz
uspto-grants-1981_04
Patentnummer
US04263293

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