Acetoacetic Acid → HCID 25165906, compound

HRID 2253796Notes

Reaction equation

HRID 2253796 reaction equation
CC([CH2:4][C:5]([OH:7])=[O:6])=O.[C:8]1([CH:15]=[CH:14][C:12]([OH:13])=[CH:11][CH:10]=1)[OH:9]>>[C:5]([OH:7])(=[O:6])[CH3:4].[C:5]([OH:7])(=[O:6])[CH3:4].[C:8]1([CH:15]=[CH:14][C:12]([OH:13])=[CH:11][CH:10]=1)[OH:9]

Participants

3

Reactant 2

HCID 96Acetoacetic AcidHCID 785Hydroquinone

Product 1

HCID 25165906HCID 25165906, compound

Procedure

The diacetate of hydroquinone had a tendency to sublime into the distillation column. It was, therefore, necessary to charge the reactor in such a was so as to make up for this loss of the diacetate of hydroquinone. The highest intrinsic viscosity was obtained when a 1.6% molar excess of hydroquinone diacetate was employed. Air was used to cool the condenser, since water cooling caused more sublimate to form in the condensation column. Excess sublimate in the distillation path would eventually inhibit the formation of high vacuum in the latter stages of the polymerization reaction.

Workup

  1. distillationto sublime into the distillation column
  2. additionnecessary to charge the reactor in such

Sources & evidence

ORD record
ord-c91b4aff77aa4f1f97e582980352dde4
Source dataset
uspto-grants-1993_08
Patent number
US05232977

Reaction notes

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