Reaktion #443414

Reaktionsgleichung

phenol

phenol

dimethyl oxalate

dimethyl oxalate

→

diphenyl oxalate

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.DISTILLATIONwas fed into the twelfth step from the top of a first fifty-plate Oldershaw-type reactive distillation column
2. 2
   Sonstigeprovided with a one liter bottom flask
3. 3
   Sonstigewhile withdrawing a resultant vapor fraction from the top portion of the first column
4. 4
   Sonstigeat a reflux ratio of 2 and condensing the withdrawn vapor fraction by a cooler

Vorschrift

A solution comprising 54.1% by weight of phenol, 45.3% by weight of dimethyl oxalate and 0.5% by weight of tetraphenoxytitanium was fed into the twelfth step from the top of a first fifty-plate Oldershaw-type reactive distillation column provided with a one liter bottom flask and having an inner diameter of 32 mm, at a flow rate of 600 ml/hr, and the bottom flask was heated by a mantle heater to a temperature of 190° C., while withdrawing a resultant vapor fraction from the top portion of the first column at a reflux ratio of 2 and condensing the withdrawn vapor fraction by a cooler, to transesterify dimethyl oxalate with phenol and to produce diphenyl oxalate.

Quelle