abstract |
(57) [Summary] [Structure] The present invention provides 3,3'-dimethylbiphenyl- 2,4'-dicarboxylic acid dialkyl ester, 3,4 ' -Dimethylbiphenyl-2,3'-dicarboxylic acid dialkyl ester and a process for synthesizing those compounds in good yield. The compound of the present invention, 3,3'-dimethylbiphenyl-2,4'-dicarboxylic acid dialkyl ester and 3,4'-dimethylbiphenyl-2,3'-dicarboxylic acid dialkyl ester, are various novel compounds. Polymer Can be used as a polymer modifier and a polymer modifier. Further, the above-mentioned biphenyl compound can be produced in good yield by using the production method of the present invention. |