Wang, Maw-Ling;Chen, Wei-Hung;Ming-Hsiung published 《Synthesis of dialkoxydiphenylmethane under phase transfer catalytic condition assisted by ultrasonic irradiation》. The research results were published in《Reaction Kinetics and Catalysis Letters》 in 2008.Quality Control of Dimethoxydiphenylmethane The article conveys some information:
The synthesis of dialkoxydiphenylmethanes (DAODPMs) from the reactions of alcs. and dichlorodiphenylmethane (DCDPM) were successfully carried out in a liquid-liquid phase transfer catalytic reaction (LL-PTC). The reactions are greatly enhanced by irradiation with ultrasonic waves. Two sequential reactions in the organic-phase solution proceed to produce the desired product. Only the dichloro-substituted product dialkoxydiphenylmethanes (DAODPM) is obtained, indicating that the second reaction is faster than the first one in the organic phase. Explanations for the phenomena of the exptl. results are provided. 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. Quality Control of 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