Tetraethylammonium Hydroxide → 3,6-Dioxabicyclo[6.2.2]dodeca-8,10,11-triene-2,7-dione

HRID 1085621Notes

Reaction equation

HRID 1085621 reaction equation
[C:1]([OH:12])(=[O:11])[C:2]1[CH:10]=[CH:9][C:5]([C:6]([OH:8])=[O:7])=[CH:4][CH:3]=1.[Ge](=O)=O.[OH-].[CH2:17]([N+](CC)(CC)CC)[CH3:18]>C(O)CO>[C:1]1(=[O:12])[O:11][CH2:18][CH2:17][O:8][C:6](=[O:7])[C:5]2[CH:9]=[CH:10][C:2]1=[CH:3][CH:4]=2

Participants

5

Reactant 3

HCID 6509Tetraethylammonium HydroxideHCID 7489Terephthalic AcidHCID 147961310-53-8

Product 1

HCID 150661113,6-Dioxabicyclo[6.2.2]dodeca-8,10,11-triene-2,7-dione

Reagents, catalysts & solvents 1

HCID 174Ethylene GlycolSolvent

Procedure

A mixture of 1734 parts by weight of terephthalic acid and 713 parts by weight of ethylene glycol was stirred for 4 hours under 2 atmospheres. Thereafter, 0.3 part by weight of germanium dioxide, 0.3 part by weight of tetraethylammonium hydroxide and 0.4 part by weight of methyl acid phosphate were added, and the reaction was carried out at 260° C. for 2 hours under 1 atmosphere. The reaction product was withdrawn, cooled, pulverized and dried to obtain 1500 parts by weight of an ethylene terephthalate oligomer.

Workup

  1. waitthe reaction was carried out at 260° C. for 2 hours under 1 atmosphere
  2. customThe reaction product was withdrawn
  3. temperaturecooled
  4. customdried

Sources & evidence

ORD record
ord-084c511c46a44915b66cbc81547ce345
Source dataset
uspto-grants-1991_04
Patent number
US05010146

Reaction notes

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