Dimethyl-2,6-naphthalenedicarboxylate → 2,6-Naphthalenedicarboxylic acid

HRID 1877736Notes

Reaction equation

HRID 1877736 reaction equation
[CH:1]1[C:10]2[C:5](=[CH:6][C:7]([C:11]([O:13]C)=[O:12])=[CH:8][CH:9]=2)[CH:4]=[CH:3][C:2]=1[C:15]([O:17]C)=[O:16].C(COC1C=C2C(=CC=1)C=C(C(O)=O)C=C2)OC1C=C2C(=CC=1)C=C(C(O)=O)C=C2>[O-]CCCC.[O-]CCCC.[O-]CCCC.[O-]CCCC.[Ti+4].C(O)CO>[CH:1]1[C:10]2[C:5](=[CH:6][C:7]([C:11]([OH:13])=[O:12])=[CH:8][CH:9]=2)[CH:4]=[CH:3][C:2]=1[C:15]([OH:17])=[O:16]

Participants

5

Reactant 2

HCID 61225Dimethyl-2,6-naphthalenedicarboxylateHCID 135877196,6'-[Ethane-1,2-diylbis(oxy)]di(naphthalene-2-carboxylic acid)

Product 1

HCID 143572,6-Naphthalenedicarboxylic acid

Reagents, catalysts & solvents 2

HCID 21801Titanium tetrabutoxideCatalystHCID 174Ethylene GlycolSolvent

Procedure

Further, an esterification reaction and a transesterification reaction were carried out among dimethyl 2,6-naphthalenedicarboxylate, 6,6′-(ethylenedioxy)di-2-naphthoic acid and ethylene glycol in the presence of titanium tetrabutoxide and then a polycondensation reaction was carried out to obtain an aromatic polyester (B-1) for the film layer (B) which comprised 73 mol % of a 2,6-naphthalenedicarboxylic acid component and 27 mol % of a 6,6′-(alkylenedioxy)di-2-naphthoic acid component based on the total of all the acid components and 98 mol % of an ethylene glycol component and 2 mol % of a diethylene glycol component based on the total of all the glycol components. This aromatic polyester (B-1) had a melting point of 240° C. and a glass transition temperature of 117° C.

Workup

  1. customFurther, an esterification reaction
  2. customa transesterification reaction
  3. customa polycondensation reaction

Sources & evidence

ORD record
ord-6d2f35444fda4e15bca56cf2723803f3
Source dataset
uspto-grants-2012_11
Patent number
US08313849B2

Reaction notes

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