Mansilla, Horacio et al. published new progress in experiments with the help of cas: 2235-01-0

The unique properties of ethers (i.e., that they are strongly polar, with nonbonding electron pairs but no hydroxyl group) enhance the formation and use of many reagents. For example, Grignard reagents cannot form unless an ether is present to share its lone pair of electrons with the magnesium atom.Reference of Dimethoxydiphenylmethane

Reference of Dimethoxydiphenylmethane《Iron(III) tosylate in the preparation of dimethyl and diethyl acetals from ketones and β-keto enol ethers from cyclic β-diketones》 was published in 2008. The authors were Mansilla, Horacio;Afonso, Maria M., and the article was included in《Synthetic Communications》. The author mentioned the following in the article:

An efficient method for conversion of ketones to their corresponding di-Me and di-Et acetals and of cyclic β-diketones into β-keto enol ethers using Fe(OTs)3 as a catalyst is described. To complete the study, the researchers used Dimethoxydiphenylmethane (cas: 2235-01-0) .

The unique properties of ethers (i.e., that they are strongly polar, with nonbonding electron pairs but no hydroxyl group) enhance the formation and use of many reagents. For example, Grignard reagents cannot form unless an ether is present to share its lone pair of electrons with the magnesium atom.Reference of Dimethoxydiphenylmethane

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