Dimethyl terephthalate → Bis(3-hydroxypropyl) terephthalate

HRID 357682

Reaction equation

HRID 357682 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].[La].CC(C)(C)/C(/O)=[CH:24]/[C:25](C(C)(C)C)=[O:26].CC(C)(C)/C(/O)=C/C(C(C)(C)C)=O.CC(C)(C)/C(/O)=C/C(C(C)(C)C)=O.[La]>>[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][CH2:24][CH2:25][OH:26])=[O:12])=[CH:3][CH:4]=1

Participants

5

Reactant 4

HCID 8441Dimethyl terephthalateHCID 104421,3-PropanediolHCID 23926LanthanumHCID 5462868Resolve-al la

Product 1

HCID 9925756Bis(3-hydroxypropyl) terephthalate

Procedure

This example demonstrates the transesterification reaction of dimethyl terephthalate with 1,3-propanediol using lanthanum t-butylacetylacetonate (otherwise known as tris(2,2,6,6-tetramethyl-3,5-heptanedionato)lanthanum or La(t-Bu-acac)3) as the transesterification catalyst (100 ppm La based on final polymer) to form bis(3-hydroxypropyl) terephthalate.

Sources & evidence

ORD record
ord-b017ad3da2454e0ab4b86034bad019cd
Source dataset
uspto-grants-1998_11
Patent number
US05840957

Linked notes

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