Villemin, Didier et al. published their research in Synthetic Communications in 1996 | CAS: 1877-75-4

2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil. Ethers are good solvents partly because they are not very reactive. Most ethers can be cleaved, however, by hydrobromic acid (HBr) to give alkyl bromides or by hydroiodic acid (HI) to give alkyl iodides.Reference of 1877-75-4

Environmentally desirable synthesis without use of organic solvent. Synthesis of aryloxyacetic acids was written by Villemin, Didier;Hammadi, Mohamed. And the article was included in Synthetic Communications in 1996.Reference of 1877-75-4 This article mentions the following:

A process using only water as solvent is described for the synthesis of aryloxyacetic acids ArOCH2CO2H (Ar = Ph, 4-MeOC6H4, 4-ClC6H4, 1-naphthyl, 2-naphthyl, 3,5-Cl2C6H3, 2,4-ClC6H3) under microwave irradiation In the experiment, the researchers used many compounds, for example, 2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4Reference of 1877-75-4).

2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil. Ethers are good solvents partly because they are not very reactive. Most ethers can be cleaved, however, by hydrobromic acid (HBr) to give alkyl bromides or by hydroiodic acid (HI) to give alkyl iodides.Reference of 1877-75-4

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem