Dimethyl terephthalate → Bis(3-hydroxypropyl) terephthalate

HRID 357680Notes

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][OH:18].O.[C:21]([O-])(=[O:23])[CH3:22].[La+3].C([O-])(=O)C.C([O-])(=O)C>>[C:6]([O:8][CH2:9][CH2:16][CH2:17][OH:18])(=[O:7])[C:5]1[CH:10]=[CH:11][C:2]([C:1]([O:13][CH2:14][CH2:22][CH2:21][OH:23])=[O:12])=[CH:3][CH:4]=1

Participants

Reactant 3

HCID 8441Dimethyl terephthalate

HCID 104421,3-Propanediol

HCID 19933532Lanthanum(3+);triacetate;hydrate

Product 1

HCID 9925756Bis(3-hydroxypropyl) terephthalate

Procedure

This example demonstrates the transesterification reaction of dimethyl terephthalate with 1,3-propanediol using lanthanum acetate monohydrate as the transesterification catalyst (100 ppm La based on final polymer) to form bis(3-hydroxypropyl) terephthalate.

Sources & evidence

ORD record: ord-d4fe8996bf3743e89ad65746160cb696
Source dataset: uspto-grants-1998_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05840957

Reaction notes

Loading…