1,4-Butanediol → bis(hydroxybutyl) terephthalate

Reaction equation

[C:1]([O:13][CH3:14])(=[O:12])[C:2]1[CH:11]=[CH:10][C:5]([C:6]([O:8][CH3:9])=[O:7])=[CH:4][CH:3]=1.C(O)[CH2:16][CH2:17][CH2:18][OH:19]>>[C:6]([O:8][CH2:9][CH2:16][CH2:17][CH2:18][OH:19])(=[O:7])[C:5]1[CH:10]=[CH:11][C:2]([C:1]([O:13][CH2:14][CH2:4][CH2:5][CH2:6][OH:7])=[O:12])=[CH:3][CH:4]=1

Participants

Reactant 2

HCID 80641,4-Butanediol

HCID 8441Dimethyl terephthalate

Product 1

HCID 11001391bis(hydroxybutyl) terephthalate

Procedure

This example demonstrates the transesterification reaction of dimethyl terephthalate with 1,4-butanediol using lanthanum tris(acetylacetonate) hydrate as the transesterification catalyst (150 ppm La based on final polymer) to form bis(4-hydroxybutyl) terephthalate.

Sources & evidence

ORD record: ord-c1dca13299994cf5b932bbe881ad2359
Source dataset: uspto-grants-1998_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05840957

Reaction notes

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