| 摘要 |
The invention relates to 4,4'-disubstituted 2',3-difluorbiphenyls of formula (I), where n is a number from 1 to 7, A stands for trans-1,4-cyclohexylene or 1,4-phenylene, r stands for 0 or 1, X stands for F, Cl, -CF3, -CHF2, -OCF3 or -OCHF2 and Z stands for H or F. |
