Laroum, Rima et al. published their research in Organic Preparations and Procedures International in 2019 | CAS: 480424-49-5

3-Formyl-2-methoxyphenylboronic acid (cas: 480424-49-5) 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. Ethers can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds. The ability to form hydrogen bonds with other compounds makes ethers particularly good solvents for a wide variety of organic compounds and a surprisingly large number of inorganic compounds.Electric Literature of C8H9BO4

Facile Synthesis and Antioxidant Evaluation of 4-Arylmethylideneisoxazol-5(4H)-ones was written by Laroum, Rima;Boulcina, Raouf;Bensouici, Chawki;Debache, Abdelmadjid. And the article was included in Organic Preparations and Procedures International in 2019.Electric Literature of C8H9BO4 This article mentions the following:

The authors report synthesis of 4-arylmethylideneisoxazol-5(4H)-ones by the reaction among aromatic aldehydes, Et acetoacetate and hydroxylamine hydrochloride catalyzed by K2CO3. In the experiment, the researchers used many compounds, for example, 3-Formyl-2-methoxyphenylboronic acid (cas: 480424-49-5Electric Literature of C8H9BO4).

3-Formyl-2-methoxyphenylboronic acid (cas: 480424-49-5) 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. Ethers can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds. The ability to form hydrogen bonds with other compounds makes ethers particularly good solvents for a wide variety of organic compounds and a surprisingly large number of inorganic compounds.Electric Literature of C8H9BO4

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