Terephthalic Acid → bis(hydroxybutyl) terephthalate

HRID 2254283Notes

Reaction equation

HRID 2254283 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.[CH2:13]([OH:18])[CH2:14][CH2:15][CH2:16]O>C([O-])(=O)C.[Li+]>[OH:7][CH2:6][CH2:5][CH2:4][CH2:3][O:7][C:6](=[O:8])[C:5]1[CH:9]=[CH:10][C:2]([C:1]([O:12][CH2:16][CH2:15][CH2:14][CH2:13][OH:18])=[O:11])=[CH:3][CH:4]=1

Participants

4

Reactant 2

HCID 7489Terephthalic AcidHCID 80641,4-Butanediol

Product 1

HCID 11001391bis(hydroxybutyl) terephthalate

Reagents, catalysts & solvents 1

HCID 3474584Lithium acetateCatalyst

Procedure

An autoclave equipped with a stirrer and distillation outlet was charged with 166 g (1.00 mole) of terephthalic acid, 180 g (2.00 moles) of 1,4-butanediol, and a small amount of lithium acetate as a catalyst. After the autoclave was provided with nitrogen at 3 kg/cm2, the mixture was reacted at 260° C. for 3 hours to obtain BHBT.

Workup

  1. customAn autoclave equipped with a stirrer
  2. distillationdistillation outlet
  3. customAfter the autoclave was provided with nitrogen at 3 kg/cm2
  4. customthe mixture was reacted at 260° C. for 3 hours
  5. customto obtain BHBT

Sources & evidence

ORD record
ord-2b0652405dbf4e7382e255b16e84c086
Source dataset
uspto-grants-1993_08
Patent number
US05235024

Reaction notes

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