Rapid epoxy cure and transamination behavior in vinylogous urethane epoxy using glyme-metal ions was written by Shin, Jaeho;Yi, Mobeom;Kim, Hyunjoong. And the article was included in Koen Yoshishu – Nippon Setchaku Gakkai Nenji Taikai in 2021.Electric Literature of C8H18O4 This article mentions the following:
Here we fabricated three different types of ILs containing lithium or zinc ligand with glyme mol. The unique functions of ionic liquids to intervene oxirane and carbonyl oxygen made the metal-glyme mixture a potential latent cure accelerator in epoxy cure reaction and a catalyst of transamination reaction at the same time. In the experiment, the researchers used many compounds, for example, 2,5,8,11-Tetraoxadodecane (cas: 112-49-2Electric Literature of C8H18O4).
2,5,8,11-Tetraoxadodecane (cas: 112-49-2) 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. Electron-deficient reagents are also stabilized by ethers. For example, borane (BH3) is a useful reagent for making alcohols. Pure borane exists as its dimer, diborane (B2H6), a toxic gas that is inconvenient and hazardous to use. Borane forms stable complexes with ethers, however, and it is often supplied and used as its liquid complex with tetrahydrofuran (THF).Electric Literature of C8H18O4
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem