Okano, Tamon;Michihashi, Tomonori;Kiji, Jitsuo published 《Acetalization of ketones and aldehydes catalyzed by lanthanoid trisulfonates》 in 1995. The article was appeared in 《Applied Organometallic Chemistry》. They have made some progress in their research.Name: Dimethoxydiphenylmethane The article mentions the following:
Lanthanoid sulfonates are good catalysts for the acetalization of aldehydes and ketones with Me orthoformate in methanol. The catalytic activity of Ln(OTf)3 (OTf = trifluoromethanesulfonate) increases in the order of La < Sm < Gd < Er < Yb. Since sulfonates such as trifluoromethylsulfonates and (1S)-10-camphorsulfonates are more soluble in organic solvents than the chlorides, the acetalization in ether or dichloromethane and the exchange reaction of alkoxy groups between acetals and alcs. can be achieved under mild conditions. And Dimethoxydiphenylmethane (cas: 2235-01-0) was used in the research process.
Dimethoxydiphenylmethane is one of ethers-buliding-blocks. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. Name: Dimethoxydiphenylmethane The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.
Reference:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem