Phthalic Anhydride → Phthalic Acid

HRID 443728Notes

Reaction equation

C([O:5]CCO)CCC.[C:9]1(=[O:19])[O:14][C:12](=[O:13])[C:11]2=[CH:15][CH:16]=[CH:17][CH:18]=[C:10]12>>[C:9]([OH:14])(=[O:19])[C:10]1[C:11](=[CH:15][CH:16]=[CH:17][CH:18]=1)[C:12]([OH:5])=[O:13]

Participants

Reactant 2

HCID 6811Phthalic Anhydride

HCID 81332-Butoxyethanol

Product 1

HCID 1017Phthalic Acid

Conditions

Temperature: 130 °C

Procedure

A reaction flask equipped with a stirrer, thermometer, and nitrogen inlet tube was charged with 93.6 grams of 2-butoxyethanol and 21 grams of phthalic anhydride. The mixture was heated under nitrogen for 30 minutes at 130° C. The butoxyethyl monoester of phthalic acid produced was a light yellow liquid which crystallized upon standing at room temperature for about one week.

Workup

customA reaction flask equipped with a stirrer

Sources & evidence

ORD record: ord-014b8f7d84f74ad2900842dfed16dbf3
Source dataset: uspto-grants-1981_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04261871

Reaction notes

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