6,6'-[Ethane-1,2-diylbis(oxy)]di(naphthalene-2-carboxylic acid) → HCID 86641715, compound

Participants

Reaction Steps

100 parts by weight of 6,6′-(ethylenedioxy)di-2-naphthoic acid, 62 parts by weight of ethylene glycol and 0.085 part by weight of tetra-n-butyl titanate were charged into an autoclave equipped with a 1-liter stirrer and a nitrogen gas introduction port, the inside of the autoclave was substituted by nitrogen, and a nitrogen pressure of 0.2 MPa was applied to carry out a reaction at 230° C. for 6 hours. A crystal which separated out after the reaction was filtered and washed with methanol. After washing, the crystal was dried in vacuum at 120° C. to obtain 115 parts by weight of bis(β-hydroxyethyl)6,6′-(ethylenedioxy)di-2-naphthoic acid. This had an esterification rate of 96%. Its melting point was 240° C.

Provenance & Evidence