| 摘要 |
1,205,374. Processes for biaryl and bi-secalkyl compounds. E. C. TAYLOR, and A. McKILLOP. 22 Jan., 1969 [25 Jan., 1968], No. 50506/69. Divided out of 1,205,373. Heading C2C. [Also in Division C5] A process for preparing a biaryl compound comprises reacting 1 molar portion of an aryl magnesium bromide with 2 molar portions of thallous bromide. Examples describe the preparation of 4,4<SP>1</SP>-dichlorobiphenyl N,N,N<SP>1</SP>,N<SP>1</SP>- tetramethylbenzidine, 4,41-dimethoxybiphenyl, 6,6<SP>1</SP> - dimethoxy - binaphthyl and 4,4<SP>1 </SP>- di - fluorobiphenyl. |
