Uludag, Nesimi et al. published their research in Organic Preparations and Procedures International in 2018 | CAS: 16356-02-8

1,4-Dimethoxy-2-butyne (cas: 16356-02-8) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. But ether is more polar than alkenes. 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.Synthetic Route of C6H10O2

Cycloaddition of Enamines with 1,4-Dimethoxy-2-butyne and 2-Butyne-1,4-diol Mediated by Titanium Tetrachloride was written by Uludag, Nesimi;Yarapsanli, Yesim;Asutay, Oktay;Gumus, Mustafa Kemal. And the article was included in Organic Preparations and Procedures International in 2018.Synthetic Route of C6H10O2 This article mentions the following:

[2 + 2]-Cycloaddition of 1,4-dimethoxy-2-butyne with, e.g., 1-morpholinocyclohexene afforded cyclobutene I when the reaction was conducted below 0° in toluene; subsequent reflux in toluene afforded the ring-expanded II. In the experiment, the researchers used many compounds, for example, 1,4-Dimethoxy-2-butyne (cas: 16356-02-8Synthetic Route of C6H10O2).

1,4-Dimethoxy-2-butyne (cas: 16356-02-8) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. But ether is more polar than alkenes. 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.Synthetic Route of C6H10O2

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