abstract |
The invention discloses a kind of compound and the preparation method of this compound and the compositions being made up of this compound, this compound shown in formula I: The preparation method of the present invention all includes difluorobromomethyl step and formation-CF 2 O-step.According to the compositions of the present invention, said composition includes 1 by weight percentage~the compound of 90% present invention.Compound and the compositions of composition thereof according to the present invention have low rotary viscosity γ 1 And high anisotropy.The preparation method of the present invention, step is simple, mild condition, controllability are strong, yield is high, post processing is simple and applicable industrialized production. |